of course, I can join Foxconn normally.

Your working experience in other places will not affect your re-employment with Foxconn (due to the confidentiality agreement, you must leave your job for more than 6 months before you can re-engage).

Foxconn's blacklist records can't be queried. Anyone who claims to be queried is suspected of cheating. As long as he doesn't leave his job by delisting, he won't be blacklisted by Foxconn.