1. Decline in revenue: If the sales of Zhongheng Group decrease, its total return on assets will also decrease.

2. Unbalanced balance sheet: If the assets and liabilities of Zhongheng Group are unbalanced, for example, assets far exceed liabilities, then the total return on assets will decline.

3. Asset quality: If the asset quality of Zhongheng Group declines, such as asset impairment or asset loss, its total return on assets will also decline.