wan series: 2k post generate 2k海报生成

It can now be run online for free through： code :rh-v1180，Register through the link or add the code to get 1000 RH coins, and 100 RH per day,

The wan series can directly produce 2k resolution posters, maintaining good composition and color matching, allowing for direct output without the hassle of secondary enlargement! Come and try it out!