But experts doubt the feasibility of those methods in China.
Some non-governmental organizations including those from foreign countries have introduced western concepts of sex education to China.
Li has little to share on the topic.
A sex education guideline for students between the ages of six and 18 was drafted and tested in primary and middle schools in the city.
The classes, which started in January, are fully booked weeks in advance, Ma said.
The love scene has been a part of cinema right from the beginning.