Anyone could hack Hillary’s unsecured server and many probably did.
The DNC e-mails weren’t hacked, Seth Rich copied them onto a thumb drive.
The Chinese were cc’ed on all but 3/4 of her 60,000 emails, including the 30,000+ that were deleted after the subpoena. So maybe Trump could ask the People’s Liberation Army, Security Division, for a copy, to be used at her trial.
Of course, the Chinese would never betray an agent like that, the way Hilliary betrayed 20 top spies for the U.S. in Chines, leading to 20 deaths (all of them) and a current lack of ability to recruit new spies (since Brennan still has his access).