If the budget for graduation tourism in senior three is about two or three thousand yuan, the following domestic tourist attractions can be considered:

1. Hangzhou: West Lake is a famous scenic spot in Hangzhou with beautiful scenery and many historical and cultural sites. In addition, Hangzhou is also very rich in food, such as West Lake vinegar fish, Longjing shrimp and so on.

2. Xiamen: Xiamen is a city full of literary flavor, with beautiful coastal scenery and Gulangyu Island with a long history. In addition, you can also taste many authentic Minnan cuisine.

3. Chengdu: Chengdu has a long history and culture, and is rich in delicious food, such as hot pot and string incense. In addition, you can also visit the giant panda breeding research base and watch the lovely giant pandas.

4. Xi' an: Xi' an is a famous historical and cultural city in China, with many famous historical sites, such as Terracotta Warriors and Horses, Wild Goose Pagoda and so on. In addition, you can also taste many authentic Shaanxi foods, such as Chinese hamburger and cold rice noodles.

5. Beijing: Beijing is the capital of China, with many famous tourist attractions, such as the Forbidden City, the Great Wall and the Summer Palace. Besides, you can also taste many authentic Beijing cuisines, such as roast duck and Zhajiang Noodles.

6. Lijiang: Old Town of Lijiang has beautiful scenery and rich Naxi culture. In addition, you can also taste many authentic Yunnan foods, such as crossing the bridge rice noodles and bean jelly.

7. Qingdao: Qingdao has beautiful seaside scenery and the architectural style of red tiles and green trees. In addition, you can also taste many authentic Qingdao foods, such as barbecue and beer.

The travel budgets of the above destinations can basically be around 2,111 yuan or 3,111 yuan, and the specific expenses need to be adjusted according to factors such as travel time, accommodation standards and modes of transportation. When planning a trip, you can choose relatively economical accommodation and transportation modes to save the budget. I wish you a happy graduation trip!