On a rainy day, Bi Bi's grandfather took him to a Vietnamese-French kindergarten. The rain was heavy and intermittent, causing the entire path to flood gradually. As we turned into lane 16 towards the school, the water had already risen to the level of the motorbikes. Suddenly, the car stalled with a sputter. "Bi Bi, sit still and let me push the car," his grandfather said. He stepped out and pushed hard against the weight of the vehicle. The rain intensified, splashing Bi Bi's face, making him vomit. "We need to get you home before you catch a cold," his grandfather decided.

On their way back, they encountered a man known as Black Face, who was carrying a large mesh bag and walking in the opposite direction.

"Where are you going, Black Face?" they asked."I'm off to fish," he replied. "I'll join you," said the grandfather, fetching a bucket before setting off with his grandson.

Leaving Bi Bi at home, he instructed her to dry off, warm up with a massage using oil, and then he left with Black Face. They found a spot where Black Face had previously set a trap for fish. They released the trap and after some time, they pulled... and pulled... only to find a piece of wood. The second attempt yielded a shoe, and the third, a snake—a strong cobra. It writhed violently, forcing the grandfather to use a stick to fend it off. "Fishing is tough," he remarked to Black Face. "How do you catch so many fish in the countryside?" Black Face replied with a bright smile, "In my hometown, the fish outnumber the trash in the sewers, Grandpa!" With confidence, he added, "Patience, sir!" and moved the trap again. Moments later, Black Face hauled up three large fish.

As they were placing the fish into the bucket, a man approached and demanded:

"Why are you two catching my fish?""Your fish? Where?" they questioned."My fish are in that lake over there," the man pointed out.

Black Face countered:

"In my hometown, fish in someone's pond belong to them. But in the river, it's common property. This is a ditch, not your pond, right?" The man, unable to argue, silently watched as they continued to fish.

Black Face reset the trap and soon caught four tilapia. Each subsequent pull brought in more fish, totaling nearly two dozen. As the rain poured down harder, the grandfather took two tilapia and offered them to the man:

"Here, take these to make some cabbage soup," he suggested kindly. The man expressed his gratitude. The grandfather then decided:"The rain is getting too heavy; it's time to take my grandson home."