Legal basis: No.2 opinion of the expert working group on the implementation of the Accounting Standards for Business Enterprises in People's Republic of China (PRC) stipulates that when preparing consolidated financial statements, enterprises will merge assets into the balance sheet because of offsetting unrealized internal sales gains and losses; If there is a temporary difference between the book value of the liabilities and the tax basis determined by the enterprises included in the consolidation scope according to the applicable tax law, deferred income tax assets or deferred income tax liabilities shall be recognized in the consolidated balance sheet; At the same time, adjust the income tax expenses in the consolidated income statement, except for deferred income tax related to transactions or events directly included in owners' equity and business combination.