Yes Mathematics on Journey to the West is free, and it is a kind of mathematics learning software with many contents, which is very suitable for children's enlightenment learning. Mathematics on Journey to the West combines the elements of Journey to the West and makes use of the stories and characters of Journey to the West. It is a mathematics learning software specially designed for preschool children aged three to eight, covering addition and subtraction, geometry, carry addition, abdication subtraction, time, currency and multiplication, which is consistent with the kindergarten syllabus.