First time to hear that. If you are Chinese grown up in PRC as well, it's most likely you are younger than I am. Also, what I said is not some content directly

First time to hear that. If you are Chinese grown up in PRC as well, it's most likely you are younger than I am. Also, what I said is not some content directly from a specific source. Even there is some kind of "standard" from the authority in some way, the possibility that people have exactly same consensus in this regard.