In which episode of "Sweeping Crime Storm" did Sun Xing celebrate He Yun's birthday?

Episode 22, specific plot: Sun Xing asked Xiaofeng to help, and he escaped for a while just to celebrate He Yun's fifty-fifth birthday. I just didn't expect that Huang Xi would see this scene.

In front of Huang Xi, Sun Xing lit candles on the cake, then asked He Yun to close her eyes and make a wish before blowing out the candles. In Huang Xi's shocked eyes, Sun Xing congratulated Yun on her happy birthday, and then called her "Mom". Huang Xi's eyes widened, thinking that he had heard wrongly. Sun Xing was about to leave, but when he passed by Huang Xi, he had murderous intentions. He Yun stopped him before he left.

He Yun's role introduction

Deputy director of the Luteng City Public Security Bureau, director of the Anti-Crime Office, and the mother of Sun Xing, who has done many bad things. He Yun is a fair and honest deputy director, and is also an idol-like existence in Huang Xi's eyes, but He Yun's true identity is the protective umbrella of evil forces.

At his 50th birthday party, Sun Xing brought a cake he bought to celebrate his mother's birthday, and He Yun was very moved. But then Huang Xi's appearance directly revealed He Yun's true face.