Size number often different in different country,but your bare foot length would never change ,so you must measure your bare foot with a ruler ,then choose size with chart below.
Bare Foot Length 24.5cm, Chinese size 39, Choose shoes size 7.5;
Bare Foot Length 25cm, Chinese size 40, Choose shoes size 8;
Bare Foot Length 25.5cm, Chinese size 41, Choose s hoes size 8.5;
Bare Foot Length 26cm, Chinese size 42, Choose s hoes size 9;
Bare Foot Length 26.5cm, Chinese size 43, Choose s hoes size 9.5;
Bare Foot Length 27cm, Chinese size 44, Choose s hoes size 10;
Please read the 100% real picture before you buy, if you can not accept, please do not buy, thanks!