[This video was shot with full consent of the model. The model was assured that she can pause or terminate the shooting and be released from any risky circumstances at any moment, by using predefined signals including but not limited to safe-words and safe-moves. WARNING: The video features performance by either professionals or under the supervision of professionals. Do not attempt to recreate any actions similar to the ones that appear in this video. No solo breathplay. NEVER.] Another Mid-Autumn Festival has come, and Xiaoyu and Yaoyao (Yaoyao1900168) are happily playing together once again. This latex duo always sparks chemistry whenever they meet, and this time is no exception. Across the two parts of the video, they introduced plenty of new and exciting play ideas… Following the events from the first half, Xiaoyu brought out a new toy: a breathing training tube. This training tube consists of a mouthpiece and a valve. Xiaoyu had Yaoyao wear a diving mask, made her bite the mouthpiece of the breathing training tube, and sealed it with film dressing. Then, a balloon was attached to the tube. Xiaoyu lifted the diving mask, allowing Yaoyao to inflate the balloon by breathing in through her nose and exhaling through her mouth. After the mask was put down again, Yaoyao could only repeatedly breathe the small amount of air inside the balloon. Watching the balloon expand and contract faster and faster, we could see how much oxygen Yaoyao had left to breathe and how much suffering the accumulated CO2 was causing her. At this point, I decided to introduce a cooperative game for the two girls. Both of them would bite on the breathing training tube, and their noses and mouths would be sealed with film dressing, only allowing them to breathe through the tube. I told them that I would only open the valve for one of them to allow her to breathe, while the other would have to hold her breath. If the one holding her breath wanted to breathe, she would need the one who was breathing to nod in agreement. Then, I would close the latter’s valve and open the former’s, switching their roles. Do you think they cooperated well, or would they try to sabotage each other? In the end, Yaoyao got tired and didn’t want to move anymore, so we wrapped her up as a mummy using cling film to keep her immobile. Unsurprisingly, Xiaoyu used a shower cap to impose strict breath control on Yaoyao and then threw her into a vacuum bag. Yaoyao already has a phobia of vacuum bags, but this time we didn’t vacuum it out, we simply sealed her inside and manually squeezed some of the air out. As time passed, the amount of CO2 increased, the oxygen decreased, and Yaoyao finally understood the terror of a vacuum bag even without suction…