HK Co acquired a 80% interest in Mainland Co on January 1, 2021 for HK$400,000, when the exchange rate was RMB1=HK$1.18. At that date, all the identifiable assets and liabilities of Mainland Co reflected their fair values and its stockholders' equity consisted of RMB500,000 capital stock and RMB300,000 retained earnings (net monetary assets were RMB30,000). HK Co made a RMB55,000 long-term non-interest-bearing loan to Mainland Co (denominated as HK$61,600) on 2 January 2021 when the exchange rate was RMB1=HK$1.12. The two companies' operations are integrated and Mainland Co relies on HK Co for financing. The 2021 trial balance of Mainland Co prepared in RMB showed the following information: