Both couples were sentenced for rape. What's going on here?

This happened in Xigang District, Dalian. Leng and Ms. Hotan were lovers. Leng took a fancy to Zhang and asked Ms. Tian to help Leng have sex with Ms. Zhang. Finally, Ms. Leng and Ms. Hetian were treated as rape.

Leng is a liar and a good liar. When I met Ms. Hotan coldly, she said that she was a special soldier of the army and had a chip on her body. The chip in the body can change consciousness with teammates at any time. Leng told Ms. Tian that Ms. Tian still trusted Leng. Ms. Tian promised Lengmou in this way, during the period when Ms. Tian and Lengmou got along. I also bought something for Leng and became Leng's girlfriend. Ms. Tian and Leng became boyfriend and girlfriend, and they had to pay Leng's daily expenses.

Leng later took a fancy to Ms. Zhang, and he defrauded Ms. Zhang's trust with the same trick. One day Lengmou was in a hotel with Ms. Zhang and Ms. Tian, 1 room. Leng wants to have sex with Ms. Zhang, and Ms. Zhang is very opposed to Leng. Leng took a look at Ms. Zhang and was very opposed to herself, so she asked Ms. Tian to help her achieve her goal.

In the hotel, Leng asked Ms. Tian to forcibly take off Ms. Zhang's clothes and asked Ms. Tian for assistance. Ms. Tian also listened to Leng's words to help Leng, and Leng forced a sexual relationship with Ms. Zhang. Not long after the time passed, Ms. Tian and Leng were arrested by the police station. In this case, both of them committed rape. The reason why Ms. Tian committed rape was because Ms. Tian helped Leng to have a forced relationship with Ms. Zhang. Ms. Tian was sentenced to three years for assisting Leng in this move and was charged with rape. Therefore, Ms. Tian and Leng both committed rape.