Citizenship issue is not under Academia Sinica's jurisdiction. The academy has no right, and therefore should not require Mr. Shi Yigong prove 美国国务院取消了his US 国籍. As long as Mr. Shi Yigong has a Chinese passport, he meet the citizen requirement. Mr. Shi should not bear the burden of prove. It is Academia Sinica's or Chinese government's job to prove otherwise.

The Chinese nation as a whole ( its people as well as its goverment) is simple-minded and unsophisticated fool, and somehow stupid moron - to be hornest.