In ancient China, MAKING LOVE was called SUN then, that is to say, to traw a circle and put a dot in the middle of it.And it is still now called SUN.in some provinces and areas.

• 在古老的中国，做爱那时叫日，也就是画个圈，在中间点个点儿，以至于至今在一些省份和地区还管做爱叫日。