I would like to ask Sina Weibo or other ugc applications, which of the following problems need attention when uploading images?

In fact, I don't know how to do it here. I would like to ask how these requests are made. Below is a request for publishing multiple images on Weibo, which is a parameter involved in the request. For example, how is this pic_id generated? What is the purpose of this operation? Thank you!

In fact, I don't know how to do it here. I would like to ask how these requests are made.
Below is a request for publishing multiple images on Weibo, which is a parameter involved in the request. For example, how is this pic_id generated? What is the purpose of this operation?

Thank you!

Reply content:

In fact, I don't know how to do it here. I would like to ask how these requests are made.
Below is a request for publishing multiple images on Weibo, which is a parameter involved in the request. For example, how is this pic_id generated? What is the purpose of this operation?

Thank you!

Generated by calling the http://open.weibo.com/wiki/2/statuses/upload_pic interface, this is an advanced interface.