Can anyone verify that this performance at Chang'an Grand Theatre is actually scheduled??

I need to buy tickets (in advance) for a September 6 showing of
"The Catch And Release Cao" at 7:30PM
Changan Grand Theatre in Beijing.
Do you know how I can buy a ticket???
I cannot find any websites that sell them, at least in English.
Can someone please check the Chinese website and at least confirm that it will take place PLEASE ???
And are my details correct? I have prices of 100/180/280/380CNY.
I found this all online previously and cannot find it again.
ANY information would be greatly appreciated.