You can go directly to the local industrial and commercial bureau. Bring your ID card, house lease contract, etc. Now three days and one day will do. The cost is several hundred at most.

If you want to be big in the future, first go to the industrial and commercial bureau to ask for a name. If the name does not conflict with others, you can apply, usually in a few days. Then fill in the industrial and commercial registration documents, shareholder agreement, capital verification and tax registration. Cost is not high!