Lu Zhen Legend TV version plot Lu Zhen was framed and poisoned and sent to prison. Which episode is it?

Episode 23, at the Spring Festival banquet, Wu Xiu stepped forward and played a song. The Queen Mother and the Emperor both praised her for playing the piano well. The Queen Mother asked Miss Wu to come to her. At this time, Wu Xiu's His hands started shaking, and then he fainted and fell to the ground. Everyone was surprised to find that she was poisoned. The Queen Mother insisted that the poison must be caused by Xiao Huanyun. The emperor didn't think so. He asked Lou Qingqiang to quickly let Si Zhengsi find out. Qi Sizheng told Lou Qingqiang that there was poison on the strings. Si Zheng told the Empress Dowager that the piano was sent to Si Baosi for repair a few days ago. The Empress Dowager ordered someone to go to Si Baosi to investigate the matter thoroughly. Even though Shen Jiamin was yelling there, Si Zheng still ordered a thorough investigation of the Jiafu Hall where Shen Jiamin lived, and the Qingjing Hall where Lu Zhen lived. When Si Zheng and Lu Zhen sat down to drink tea, servants came to report that they had found some aconite in Qingjing Hall. Lu Zhen admitted that the handkerchief and the aconite were hers, but she promised that she had never harmed anyone. Because the matter was so important, Si Zheng took Lu Zhen to see Lou Qingqiang. Lou Qingqiang asked Lu Zhen why she hid Aconitum secretly and why she wanted to personally test the toxicity of Aconitum? Lu Zhen said that she had her own reasons, but she refused to tell the reason. In accordance with palace regulations, Lou Qingqiang ordered Lu Zhen to be tortured, and then ordered her to be imprisoned.