The pair of fighters separated when the door started to open again. Kat's dress was in tatters. Once Meng realised that Kat was perfectly happy to fight her while Meng abused more speed and power, and further, was completely unconcerned about injuries, Meng let herself flex a bit. It was all in the name of showing off techniques, but Kat had a strong base and it was just a matter of training the techniques into her muscles. Meng was happy to oblige.
When the door opened to reveal both Bing and Feng exiting together, arms over their shoulders and laughing, neither Meng nor Kat would say they were surprised. They also didn't really think how it would look to the two newcomers. The room had a few chips in the floor, with a good helping of black blood scattered over the stone. Meng only had a few cuts and rips in her outfit, but as already mentioned, Kat's was much worse for wear.