Hanoi Cathedral, located near Lake Huanjian, was built in 1886. It is 130 years old. It is the oldest Cathedral in Hanoi. It is said that it was modelled on Notre Dame Cathedral in Paris. Hanoi Cathedral is the most representative French architecture in Hanoi, which has the European medieval style. After many wars, the French incorporated Vietnam into their colonial system through the Badnow Treaty in June 1884. Two years after the signing of the Treaty of Badnow, the French built the cathedral in Hanoi. French colonization of Vietnam in 71 years, but also around the Sword Lake, those French buildings, that French culture influence Vietnam everywhere. In Hanoi, we took a taxi from the Confucian Temple to the cathedral. One of the most disgusting things happened. The black taxi driver robbed us of our money. Before going to Vietnam to do homework, there are many donkey friends reminding Vietnam that social order is not good, to be vigilant against black taxis, they are unreliable. A taxi must be taken by a regular taxi company. The name and license plate characteristics of the regular taxi company are also given. When we came out of the Confucian Temple in Hanoi, we found that there was a taxi there, so we took it to the cathedral. When I got on the bus, I found that there was something wrong with the meter. The words jumped very fast. When we arrived at the cathedral and paid Vietnam Shield, the black taxi driver robbed us of our money. Not too much money was stolen. That's 50 yuan in RMB, but it was disgusting.