What does shuangjie mean? How to understand Shuangqing?

1, "double purity" refers to purity, which means that both protagonists are spiritually pure. To sum up, double purity means that both sides are absolutely pure both physically and mentally.

2, emotional cleanliness: there is a person who likes each other in the attacked life. Physical cleanliness: having and only having sex with each other in the life of being attacked, including mutual attacks and counterattacks. That is to say, if there are past lives and future lives, all the worlds should be double-clean, and if there is a passing possession, the possessed body should also be double-clean.