C158 What i want is this effect

"But …"

"No buts, if you want to know the question, just do a blood test."

Seeing that Gu Tong still hadn't given up, Si Yichen could only reveal his plan.

Hearing Si Yicheng's words, Gu Tong was suddenly enlightened. She straightforwardly replied, "Alright, I'll do as you say."

As soon as Gu Tong responded, Si Yichen raised his eyes and said to the promise, "I promised