In recent years, there have been no shortage of topics on the public opinion in China about people born in the 70s, 80s and 90s. These three groups of people are often compared or even directly debate with each other under various backgrounds, and the Internet is undoubtedly the main battleground for such debates. However, when some positive topics fade out of the discussion platform, a series of debates with personal attacks begin to prevail. The most recent one is "Sister Lan Dong", who claims to be a representative of the post-70s generation and harshly criticizes the post-80s and post-90s generations. Online debates certainly have their irreplaceable interactive charm and broad range of exchange topics, but should they always bring up issues related to the post-70s, post-80s, and post-90s generations?