Wang Qian didn't agree. "Maybe Bear Grylls would be interested in taking a challenge." Zhang Zian asked, "Master Zhao, did you just say that you have water hose at home? May I borrow it? Please also get a container, such as a basin or a bucket." "Okay. Just a moment." Welder Zhao had already lost himself by now. He would do anything he was told. He ran into the kitchen and searched loudly for a while. He came back with a full armor: a bucket in his hand, a basin under his arm, and a water hose on his shoulder. "Are these enough?" he asked. "Fine, no problem." Zhang Zian nodded, then looked at the frightened and helpless children and smiled. "Kids, I'll demonstrate a simple scientific phenomenon. It's called siphonage." If there were another adult around, such as Welder Zhao's daughter-in-law, she would certainly ask the kids to stay in another room so they would not be frightened or get injured. But as Welder Zhao was a crude man, and Electrician Wu was consumed with anger, nobody thought about keeping the kids away for the moment. The kids stood by the wall and didn't know what to do. Without receiving instructions, they didn't know whether to stay or to leave. They were more or less scared, and even the naughtiest kid became quiet. Zhang Zian noticed their fear. To prevent them from developing psychological trauma, he decided to use the event and to divert their attention with a scientific experiment.