Can I still apply for a China patent if I have successfully applied for an invention patent abroad for more than 2 years (when I didn't apply for priority protection)?

no, the patent has been published. The priority period is 12 months.

if the patent is applied in China, the patented drug that does not meet the requirements of the patent law meets the requirements of novelty, because the patent has been made public and entered the public domain, and there is no novelty. Therefore, it will not be protected by patent law.

I hope I can help you.