For a well-paced trip that covers the major highlights of Chengdu, staying for 3 days is generally considered ideal. This timeframe allows you to dedicate a full morning to the Research Base of Giant Panda Breeding when the animals are most active, while still having ample time to explore cultural landmarks like the Wuhou Shrine, Wenshu Monastery, and Du Fu Thatched Cottage. You can also experience the city's famous "slow life" by relaxing in People’s Park teahouses and wandering through the historic Kuanzhai and Jinli Alleys. If you only have 1 or 2 days, you can focus on specific interests like pandas and local Sichuan cuisine, but a shorter stay may feel rushed. For those who wish to venture further, extending your stay to 4 to 7 days is recommended to accommodate day trips to the Leshan Giant Buddha, Mount Emei, or the Dujiangyan Irrigation System, or to include a longer excursion to the natural wonders of Jiuzhaigou. Ultimately, while you can see the city's highlights in a few days, a longer stay of 4 or 5 days offers a deeper immersion into the region's diverse history, nature, and world-renowned gastronomy.