It's on the first floor. Whether it's a loss or a profit, you have to file a tax return. Article 25 of the Law of People's Republic of China (PRC) on Tax Collection and Administration stipulates that "taxpayers must truthfully file tax returns in accordance with the time limit and content stipulated by laws and administrative regulations or determined by tax authorities in accordance with the provisions of laws and administrative regulations", and Article 62 "taxpayers who fail to file tax returns and submit tax information within the prescribed time limit may be fined up to 2,000 yuan; If the circumstances are serious, a fine of not less than two thousand yuan but not more than ten thousand yuan may be imposed. "