if you looked at her pre-show 清唱 (ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-Ny873u03GWI.htmlsi=ORdOzqq-lmvpQF6K&t=88) , she sang well. And I doubted there was EQ in this pre-show recording. There are many reasons that might lead to a performer not able to sing as well during a live show (especially in a loud environment), eg. not used to using in-ear monitor (IEM) or the mix in the IEM was not well done, etc. End of the day, she was definitely not a seasoned, live concert performer, but her definitely has the quality.