This sentence means adding five flavors to Chengdu’s food, and Chengdu’s food will be more delicious.

The "five flavors" refer to the five basic flavors of sour, sweet, bitter, spicy, and salty. Chengdu has a rich food culture and is famous for its spicy taste. Adding five basic flavors to Chengdu's cuisine can enrich the taste of the food and make it more delicious. This sentence expresses the love for Chengdu food and praises its unique flavor. It also reflects the expectation for the innovation and development of Chengdu food.