上此在Toronto签的H1B过期了，想回国renew。
看到这个：http://www.ustraveldocs.com/cn/cn-niv-ds160info.asp
The interview post you select at the beginning of the Form DS-160 must be
the same post where you schedule your interview appointment. IMPORTANT NOTE:
If you are renewing a visa or you are otherwise not required to appear for
an interview, please select “Guangzhou.”
这么说只能在广州面签，不能在北京？
多谢
