How to apply for overseas patents through PCT agreement?

Last year, I applied for a number of overseas patents through the high-end intellectual property of PCT agreement, so I know how to apply for overseas patents. Generally speaking, only after applying for a patent in China can you apply for a patent abroad. You can file a national application with the China Patent Office first. Then file an international application within the priority period of 12 months and ask for priority, so that you have 12 months to make the necessary preparations for filing an application, and you can download it.