C221

According to Old Lady Shen's attitude towards Qin Ruochu, she would definitely suspect Qin Ruochu. At that time, if Qiao Yitong tampered with any further, she would produce some fake 'evidence' or use money to find some fake 'witnesses'. Even if Qin Ruochu had a mouth, it would be hard to tell them apart.

This way, not only did Qiao Yitong fulfill her promise to Shen Shuzhou