Update readme_cn.md

zhifu gao

2023-07-03 4a47e3b3dc0a1eeec17868763f9faae7da58bb4a

1
2
3
4
5
6
7
8
9
C    1
CC    2
CCC    3
CD    4
D    5
DC    6
DCC    7
DCCC    8
CM    9