Madam Liu, after all, was an experienced woman and managed to get her way with just a little trickery.
"Oh…," suddenly Madam Liu clutched her stomach and let out a cry of pain.
"What's wrong?" Yiyi and Qin Xiaotian asked in unison.
"I…I think I ate something bad, and…I need to use the restroom," said Madam Liu awkwardly.
"Should…I help you there?" Yiyi asked.
"Yes!" nodded Madam Liu.
Yiyi, suspecting nothing devious, immediately supported Madam Liu and walked toward the nearby ladies' restroom. Qin Xiaotian saw his chance and was ecstatic. As soon as he saw Yiyi assist Madam Liu into the ladies' washroom, he quickly pulled out a packet of powder from his pocket, opened it, looked around to make sure no one was watching, and hastily poured the contents of the packet into Yiyi's cup. Then, he gently stirred with a spoon.