Group 1 - The article discusses the provisions of the Corporate Income Tax Law of the People's Republic of China regarding deductible long-term deferred expenses, including expenditures on the renovation of fixed assets and major repairs [2] - It specifies that expenditures on the renovation of fixed assets are deductible if they extend the useful life or change the structure of buildings [2] - The article outlines that such expenditures should be amortized over the remaining useful life of the asset or the remaining lease term as per the contract [2] Group 2 - The article emphasizes that the expenditures for the renovation of leased fixed assets must be amortized according to the remaining lease term [2] - It also notes that any extensions of the useful life of fixed assets must comply with the stipulations of the Corporate Income Tax Law [2]