1. The "Same Song" program group can use it, but other TV stations cannot use it unless authorized. This is true for Wanglaoji and Jiaduobao.

2. To run the program "The Big World", you must first apply for a trademark. TV program production belongs to category 41:

Radio and TV program production 410026, TV entertainment program 410031, etc. In this way, the trademark belongs to you.

3. Copyright is for every program you produce. This is the copyright.

4. To apply for the trademark "天大地大", you can find an agency or come to Beijing to apply yourself. The same is true for copyright. No legal procedures are required.

Hope this helps!