They must get to the bottom of this matter and also carry out the investigation with great fanfare. They must clear Li Gui's name! They must clear the restaurant's name!

"What about Grandfather? Does Grandfather know about this?" Qiao Mei asked nervously. "Not yet," Xia Wen said.

After all, Qiao Qiang was already so old and he had seen Li Gui's sacrifices over the years. He had long treated Li Gui as part of his family. In his heart, Li Gui and Qiao Mei were probably equally important.

"How are the four kids?" Qiao Mei asked again.

After a moment of silence, Xia Wen said, "All four kids were actually present during that time. They were helping out in the kitchen that day. Xiao Wei has been the one taking care of his younger siblings for the past few days. This kid will be able to achieve great things in the future. He is able to keep calm under difficult situations."

Qiao Mei finally felt less tense. It was not scary that something had happened. As long as her family members were still healthy and alive, everything else could be resolved.

Xia Yue could not help but yawn. It had been a long flight and the three children were a little tired from the journey. Xia Wen drove back to Qiao Mei's house first to get the children settled.

Xu Kang and Feng Hua hurriedly ran out to carry out the luggage and take care of the children. The adults went to the study to discuss the issue.

"Did you find out what went wrong?" Qiao Mei asked.

"The first thing we did was to check if the food was the problem. The shop staff had already been sent to Eldest Auntie for interrogation. They didn't do anything. The only possibility is the water source," Xia Wen said.

On the morning of the incident, the shop staff were at work getting the ingredients ready and Li Gui was in the kitchen to help out. Everything seemed normal and there were no suspicious people around. Qiao Mei checked on the memories for the day before and found out that someone had entered the kitchen at night and then went out with two buckets.

"Have you checked on the swill collector?" Qiao Mei asked.

"No..." Xia Wen said after being stunned for a moment.

It was no wonder that Xia Wen did not know about this. No one else in the Xia family was in the food and beverage industry. Swill was very much in demand in this era. It was a very lucrative business. One could feed it to one's livestock or sell it for a lot of money.

"I'll go and check now!" Xia Wen had only taken two steps when he returned and handed the car keys to Qiao Mei. "I'll arrange for transport. You can drive my car back."

Qiao Mei nodded. She still needed to stay around and check for more clues.

The next morning, Qiao Mei received a call from Xia Wen. The swill collector had been found, but he was not the one who collected the swill that day.

The original swill collector was an old man. He was a relative of one of the shop staff and had made use of this relationship to ask Li Gui to let him collect the swill. He had been doing well, but in the past few days, his family's cows had suddenly fallen sick and then died!

He had wanted to go and settle this score with the restaurant! Before he could do that though, the incident had happened.

"What else did he say?" Qiao Mei asked with a frown.

"A woman came to look for him and borrowed his three-wheeled vehicle. That's why he didn't go out to collect swill during this period of time," Xia Wen said.