That was over Xinjiang and HK. Plus, PRC sanctioned him after he's no longer in office. I am aware of the recent press release from mainland's Taiwan relation office. Three Taiwanese (苏贞昌, 游锡堃, 吴钊燮) named, they have been openly anti ccp and pro independence for a long time. I doubt any of them has business relations with mainland or HK. If CCP is serious about going after DPP, they should go after the new tide fraction (新潮流).
Good initial step in sanctioning the traitors.
Zhu named three secessionists - Soo Tsing-tshiong, You Si-kun and Joseph Wu - saying that a few of the secessionists on the island have been hyping cross-Straits confrontations, maliciously attacking the mainland, colluding with foreign forces to split China, severely affecting cross-Straits stability, and damaging the Chinese people's interests.