The format of each post bar is different, some attach great importance to it, and some seem indifferent, which is mainly decided by the bar staff (big bar owners and small bar owners). Baidu Post Bar system has no rigid requirements for this.

Take Gundam Bar as an example. The bar is at the top:

The Third Centennial Commemoration of Ba Magazine —— The Brilliance of UC

The first bracket is the type, the second bracket is the supplement (generally there is no problem without supplement), and finally the post title.

If you want to post in Gundam Bar and ask where to buy a model in Shanghai, the more appropriate format is:

Help-seeking model Is there a place in Shanghai suitable for buying models?

However, the format of each bar is different. It's best to look at the top post first, and then look at other posts in the library. If the two formats are mostly consistent, then the format is the top-level format. If it's messy, it should be that you don't pay much attention to the format, so just post it casually.