I received mails in Chinese, so tried to translate in English here. I like their idea about expressing Taiwan. Anyone would like to have more info, please directly go Youtube for contacting the author.
Today I tried to know that how to create a drill file in PCBnew of Kicad and check pcb by DRC function. Then something encountered I didn't know. So I posted email to list to ask. We'll see the real answers later. jeje...