The purpose of this study is to examine the effect of mandatory interim audit in Q2 on the financial reporting quality for KY firms. The results show that the magnitude of downward earnings management increases after the implementation of the requirement. Moreover, we find that KY firms with greater blockholder ownership or whose chairman is held by an ultimate controller are less likely to manage earnings upwards after the new regulation takes effect. In our additional tests, we find that even after the implementation of new regulations, KY firms with substantial capital remittance or higher CEO compensation continue to manage their earnings upwards, suggesting that mandatory interim audit cannot deter their windows dressing of earnings.