Is it illegal to gather and hold banners in the street without permission to celebrate?

According to the Law of People's Republic of China (PRC) on Demonstrations and Demonstrations

Article 8 of Chapter II stipulates that there must be a person in charge for holding an assembly, a procession or a demonstration.

The person in charge of an assembly, a procession or a demonstration that needs to be applied for in accordance with the provisions of this Law must submit a written application to the competent authority five days before the date of holding. The application shall specify the purpose, mode, slogan, slogan, number of people, number of vehicles, type and quantity of audio equipment used, starting and ending time, place (including assembly place and dissolution place), route and name, occupation and address of the person in charge.

Chapter IV Article 29:

If an application is not made in accordance with the provisions of this Law, or the application is not approved, or the dissolution order is refused according to the starting and ending time, place and route approved by the competent authority, thus seriously undermining social order, criminal responsibility shall be investigated in accordance with the relevant provisions of the Criminal Law.

Those who occupy public places, stop vehicles and pedestrians, or gather people to block traffic and seriously disrupt public places and traffic order shall be investigated for criminal responsibility in accordance with the relevant provisions of the Criminal Law.

I hope you can adopt. ....