Today, if cash is sold to a bank, 1 HKD =0.8720.
If Hong Kong dollar bills are sold to banks, 1 HKD = 0.85438+0.
If RMB is converted into Hong Kong dollars, 1 Hong Kong dollars =0.8825.
(0.879 1+0.8825)/2=0.8808, which is the median price (average price) of the bank.