That's because they filmed the TV series "Ji Xiaolan with Iron Teeth and Copper Teeth" together, and shot four movies. Wang Gang, as a professional in the TV series, Zhang Tie-Lin, as the emperor, and Zhang Guoli, as the Ji Xiaolan in the play, all three people bicker in the play, and the whole plot is also quite happy, just because the three of them once filmed the iron tooth and copper tooth Ji Xiaolan together, which is also called the iron triangle by netizens. In addition to this reason, because they have the same interests, they can talk more privately, so the three of them are also called the iron triangle combination. The TV series Ji Xiaolan with Iron Teeth and Copper Teeth, starring Wang Gang, Zhang Guoli and Zhang Tie-Lin, is also very popular, with four films shot in one * * *, and netizens are happy to watch all kinds of disputes among them. The fire in Ji Xiaolan with Iron Teeth and Copper Teeth also laid the foundation for the trio to become the Iron Triangle Group. Because four films have been filmed, the feelings between the three people and all aspects are familiar, so netizens also like to call them the Iron Triangle Group. No matter Wang Gang, Zhang Guoli and Zhang Tie-Lin, they are all excellent actors and have shot many excellent works. They are similar in age and have similar interests, and they also have fun in private. Usually, when we are not filming, we will talk about calligraphy and collection, because the three people have deep feelings. I didn't say that because there was no intersection after filming Ji Xiaolan with iron teeth and copper teeth, even when I wasn't filming, I would still like to get together. As actors of the older generation, the three of them have cooperated many times, not only shooting Ji Xiaolan with iron teeth and copper teeth, but also The Son of Man in Cloth and so on. As actors of the older generation, their works are very strong, and they have the same interests and hobbies, and they are called the Iron Triangle because they have filmed Ji Xiaolan with iron teeth and copper teeth together. As excellent actors, the three of them also know each other all the way, and the feelings of knowing each other are also very deep.