Product Decoder on Chung-Hao Lee

Product Decoder: Douyin's AI Fact-Check — How a Simple @ Mention Fights Misinformation

Sat, 04 Apr 2026 00:00:00 +0000

As a PM, I always like to view products from a user’s perspective. This time, I’d like to analyze a feature I find brilliantly designed — Douyin’s “AI Fact-Check” (@抖音求真).

身為產品經理，我習慣從使用者視角出發。這次我想聊聊一個設計得非常精妙的功能：抖音的「AI 求真」(@抖音求真)。

What Is It? #

When browsing Douyin, if a user encounters content that seems questionable, they can simply type @抖音求真 in the comments. An AI agent then verifies the claim, compiles sources, and replies with a structured summary—labeling the content as confirmed, disputed, or debunked.

Product Decoder: Messenger 的拆分策略與引用回覆功能解析

Sun, 19 Oct 2025 00:00:00 +0000

身為一位PM,我總是喜歡以一位使用者角度來看一個產品。這次想來跟著大家一起來看我心中一個很好的產品 — Messenger。

一、 Messenger從Facebook App中獨立出來 #

Messenger 本來是 Facebook 的一個通訊功能,但在 2015 年時被 Facebook 分拆出來,要求用戶單獨下載 App 來做使用。

坦白說,當時我覺得很麻煩,覺得同樣都是 Facebook,為什麼要分兩個 App 做使用 (Facebook: 主要用來瀏覽動態 / Messenger: 主要用來與人溝通)。

但是後來看,會發現這是非常高明的一步。

用戶視角 #

以用戶視角來看,我很大的需求是想要與我的朋友溝通、分享資訊。

如果 Messenger 還是被綁定在 Facebook 內部的話,那我要與我的朋友溝通時,總共要幾步呢?

打開 Facebook app
打開 Messenger
找到我朋友
開始溝通

如果 Messenger 獨立出來成為一個 App,那我要與我的朋友溝通時,總共要幾步呢?

Product Decoder: Messenger's Unbundling Strategy and Quoted Reply Feature Analysis

Sun, 19 Oct 2025 00:00:00 +0000

As a PM, I always like to view products from a user’s perspective. This time, I’d like to analyze a product I consider to be excellent — Messenger.

I. Messenger’s Unbundling from the Facebook App #

Messenger was originally a messaging feature within Facebook, but around 2015, Facebook unbundled it, requiring users to download a separate app to use it.