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Yitang / First Lesson on In-Depth Review

Yitang's mandatory course for all staff: First Lesson on In-Depth Review, delivered by Truman. "An organization capable of producing high-quality reviews can basically do everything well" (Wang Xing). It covers 5 parts (building negative aesthetic / understanding value / advanced improvement / high-level application / re-understanding) + the 5-step review method (sort out the process → review goals → evaluate results → analyze causes → summarize lessons) + 5 major principles (seeking truth from facts / open mind / self-reflection / candid expression / drawing on collective wisdom) + 4 levels of review (entry-level post-event chat / beginner-level process sorting / intermediate-level structured analysis / advanced-level growth-oriented reflection) + cases including Mao Zedong as an educator / Su Yu / Liu Chuanzhi / AAR, etc. Comes with candy: Yu Lu's 5-year in-depth review case from Someet + a full-web research report on review tools

Source collection:Yitang Course Notes · Published here:2026-09-26

Retrospective methodsOrganizational learningSelf-reflection

Truman delivered First Lesson on In-Depth Review in 2024.Mandatory for all staff, at the foundational skill level. Comes with 2 Candies (Yu Lu's 5-year in-depth review of entrepreneurship at Someet + full-web research report on review tools).


I. Core Mindset

"An organization capable of producing high-quality reviews can basically do everything well." — Wang Xing

The essence of review

Review is "going through what has been done all over again from the start". "I make a living by summing up experience." — Mao Zedong Liu Chuanzhi introduced review into corporate management at Lenovo in 2001, and it was iterated to version 3.0 in 2019.

Why this first lesson

Findings from course polishing research in 2023:Far too many teams have too weak an awareness of review and spend too little time on it, leading to huge waste.

  • Reviews become a mere formality
  • They turn into summary meetings / praise meetings / criticism meetings / buck-passing meetings
  • The most essential insights behind them are not extracted, and experience is wasted in vain

II. 5-Part Course Structure

Part 1: Build negative aesthetic

What counts as an unqualified review:

  1. After project ends → go for a meal and thank each other ❌
  2. Fixed 3-minute review at the end of weekly meetings ✅ (beginner level)
  3. Project manager sends a summary email ❌ (only one person writes it)
  4. Organize monthly review meetings ✅
  5. CaseStudy on major mistakes ✅
  6. Year-end review ✅

Part 2: Understand value

  • Review is about "developing the habit of post-event review and reflection"; specific methods are secondary
  • Cultivate sensitivity (recall how many reviews you have done in the past 3 years)
  • Cultivate depth of thinking

Part 3: Advanced improvement (in-depth review iceberg diagram)

4 levels:

Level Description Focus
Entry: casual chat after the event No need to apply any model/tool Develop the habit of post-event review and reflection
Beginner: sort through the process Speak with facts, sort out the ins and outs Develop the habit of speaking with facts
Intermediate: structured analysis Follow review logic, start from the gap between "expectation and reality" Develop the habit of structured thinking
Advanced: growth-oriented reflection Reflect on yourself, cultivate yourself through events Changing yourself is the ultimate way of learning

Part 4: High-level application

How to cultivate a review atmosphere in the team — review culture building (see cases in Part 3 for details).

Part 5: Re-understand

Why must we do reviews? The fundamental value for individuals and teams.


III. 5-Step Review Method (Lenovo / Yitang version)

Step Meaning
1. Sort out the process Truthfully restore the action process / key matters / important nodes / ins and outs
2. Review goals Examine the original expectations.Strictly distinguish between "purpose" and "goal": purpose is the direction your eyes are fixed on; goal is the marker that lets you tell at a glance how well you have done
3. Evaluate results Put "expectations and results" together for comparison
4. Analyze causes After comparison, analyze the reasons why "expectations" and "results" are consistent or inconsistent
5. Summarize lessons Form conclusions from the above analysis, generalize them, select feasible plans and put them into action

5 Principles of Review

Principle Core
Seek truth from facts Do not draw false conclusions from false problems
Open mind Maintain information interaction with the outside world (be able to take in different opinions)
Self-reflection Focus on what you have actually learned
Candid expression Speak directly, and speak nicely
Draw on collective wisdom A single spark can start a prairie fire

Review vs Summary

Summary: sorts out the event process, key points and milestones. Review: in addition to the actions included in a summary,conducts hypothetical inquiry into actions that did not happen, explores the possibility and feasibility of other actions, and finds new methods and ways out.

Core difference:Deduction.


IV. Dual Dimensions of Review (Logic + Action)

Expectation = what it is / why / how to do it Result = logic dimension + action dimension

Logic dimension

  • Phased status + results of various measures
  • Verify whether the originally assumed "expectation-measure" causal relationship actually exists
  • Goal progress / purpose achievement / various indicators of measures

Action dimension

  • Actions taken in the process of achieving the goal + key problems encountered + team collaboration
  • Examine real execution capability
  • Focus on actions, micro-level "execution management", discuss details

V. 4 Types of Review

Type Applicable scenario Corresponding to Confucius
Personal review Personal first-hand experience, improve leadership / professional capability / execution capability Cultivate oneself
Team review Single-team or multi-team collaboration Regulate the family
Project review Long-term/large-scale projects, functional work Govern the state
Business/strategic review Business unit/company level Bring peace to all under heaven

Full-process review vs key-point review

  • Full process: go through the entire process from start to finish according to the review model
  • Key points: focus on key points determined in advance, requiring one week of preparation before the meeting

VI. 6 Key Points of Review

  1. Review is for the purpose of learning, ultimately aimed at improving cognition
  2. Based on facts, study real problems
  3. Sort out and restore the course of events, do not only look at results
  4. The logical starting point is purpose(why you did this thing in the first place)
  5. Participants who experienced the event firsthand must be present(non-firsthand participants serve as questioners and advisors)
  6. Time-consuming and labor-intensive, requiring internal and external motivation to push forward

VII. 3 Core Skills for Effective Review

Skill Function
Review facilitation Host controls the field / guides in-depth dialogue
Systems thinking Find "leverage solutions" and "root solutions". "Break through Rashomon, do not act like blind men touching an elephant"
Knowledge extraction Precipitate review conclusions into team knowledge

Beyond Review — Break Through 3 Major Limitations

Limitation Breakthrough method
Learning from action: personal experience is limited Learn more from and refer to others' experience
Learning from oneself: groupthink / cognitive ceiling Exchange ideas more with experts / conduct cross-team and cross-professional communication
Learning from the past: being a Monday-morning quarterback Ask "Does this explanation help predict the future?" Apply first principles / multiple mental models (Charlie Munger)

VIII. AAR (US Army After Action Review)

US military system, originating from the Vietnam War.6 steps:

  1. What was the intent? Original intent / purpose
  2. What happened? What happened / how it happened / why
  3. What have we learned? What was learned / what to do if done over / what advice to give others
  4. What do we do now? Short-term / medium-term / long-term actions
  5. Take action Take action
  6. Tell someone else Share with more people

IX. Candy 1: Yu Lu's 5-Year In-Depth Review Case from Someet

Yu Lu(Yitang course product manager, the startup project before joining Yitang).

Project data

  • Someet(S should be capitalized), offline socializing for young people in Beijing, Shanghai and Guangzhou
  • Raised 2 rounds of financing = $5M+, operated for 5 years,fell at the Pre-A round
  • Users 457,407 / activity participations 46,543 / initiators 4,172
  • Launched 20,000+ activities
  • Business cooperation: NetEase / Didi / Taobao / Uber / Wanhetianyi / Hong Kong Madame Tussauds, etc.
  • 2017 "Huxiu Most Respected Brain Hole Award"

6 stages

Stage Time Key tasks
1. Pre-judgment 2015.1-3 Choose direction / determine values
2. MVP 2015.4-7 Iterate activity model / secure angel round
3. Team 2015.8-2016.1 Team framework basically took shape
4. Replication 2016.2-9 Replicate to Shanghai and Guangzhou
5. Membership & marketing 2016.10-2018.7 Membership system launched / marketing trial and error
6. Split and endgame 2018.8-2020.3 Activity volume declined / marketing spending rose

4 keywords

Values, choice, best practices, diseconomies of scale.

2 core thinking questions for important decisions

  1. When mission values conflict with business goals, how would you choose?
  2. Add condition: the company is already heavily in debt. Add another condition: either choice may cause partners to leave.

X. Candy 2: Full-Web Research Report on Review Tools

The full-web review tool system researched by the teaching and research PM. 4-level rating S/A/B/C:

S-level Must read:

  1. "Review: In the Review 3.0 Era, How to 'Go from Breaking to Establishing'" — Full decryption of Lenovo's official review method

A-level Best to read if you have time:

  1. "Review Work Method" (Alibaba) — 4 forms: personal / business / group / cross-level

B-level Optional reading:

  1. "Review - Thinking Drill Practice Edition for Past Events"
  2. "Review+ (3rd Edition): Turn Experience into Capability" — 25 "pitfalls" and countermeasure suggestions
  3. "Review Master: The Underlying Logic of Self-Awareness and Self-Improvement" — daily review / monthly review / annual review
  4. "Review: The Self-Guiding Rule for Solving Life Problems"

C-level No need to read for now:

  1. "Review: Thinking Drills for Past Events" — cases of Lenovo surpassing Dell, etc.
  2. "Five Major Review Tools and Practical Application" — project review canvas / fishbowl meeting / U-shaped canvas / future search / 4F team canvas
  3. "Review Coach" — 4-step review method + fishbowl / U-shaped / future search

Feishu review template

  • GRAI review method
  • Project review

See also