There are many delicious beef restaurants in the East Gate of Chengdu. Here are some recommendations:

1. Chen Mapo Tofu (located in East Street): This restaurant mainly serves Mapo Tofu and other Sichuan dishes. Their beef dishes are excellent, especially beef hot pot and beef bibimbap.

2. Taolin (located in Chunxi Road): This restaurant offers a variety of exquisite Sichuan dishes, including beef chafing dish, beef skewers, beef bibimbap and so on. Their ingredients are fresh and full of flavor.

3. Diners in Chengdu (located in Kuixinglou Street): This restaurant mainly serves traditional Chengdu snacks, but also provides various beef dishes. Their beef hotpot and beef fried meat are very popular.

4. Xiaolongkan (located in East Street): This restaurant serves all kinds of Sichuan hotpot, including beef hotpot and mutton hotpot. Their ingredients are fresh, the spices are delicious and the taste is great.

5. Shu Jiuxiang (located in Kuixinglou Street): This restaurant serves all kinds of Sichuan dishes, including beef hotpot, beef skewers, beef bibimbap and so on. Their ingredients are fresh and full of flavor.

The above are recommended by some beef restaurants in Dongmen, Chengdu. Of course, there are many other restaurants that are also very good. You can choose according to your own tastes and preferences.