How about international students applying for Tsinghua as foreigners?

Yes, but you should pay attention to the following points:

1) Last year or the year before, Peking University found out that China people immigrated to Guinea-Bissau and applied for Peking University students with Guinea-Bissau nationality. Now, the qualification examination of foreign students is strict. If you have not obtained nationality for a long time, there may be problems.

2) The tuition fee is at least twice that of China students.