there is no such thing as trial operation in industrial and commercial laws and regulations.

the normal requirement is to apply for a good business license before allowing business, otherwise it is operating without a license.

The following specific laws and regulations:

Detailed Rules for the Implementation of the Provisional Regulations on the Administration of Urban and Rural Individual Industrial and Commercial Households, according to Article 7 (individuals or families applying for individual industrial and commercial operation shall apply for registration with the local administrative department for industry and commerce with the local household registration certificate and other relevant certificates, and may not start business until they are approved by the county-level administrative department for industry and commerce)

and Article 22, Those who start business without approval, registration and issuance of a business license by the administrative department for industry and commerce are illegal businesses, which shall be banned, their illegal income shall be confiscated and they may be fined not more than 5,111 yuan.

But, as you know, everything can be flexible in China, as long as you do a good job and no one comes to check on you.