You can take the 6 1 1, 603 to the Bell Tower Station, coin in 1 yuan, and swipe your card for 50 points (I guess you don't have a card).
Go to the southwest corner of the bell tower, in the direction of West Street, and put your luggage on the civil aviation shuttle bus of Meilun Hotel. (estimated after 8 o'clock)
Then go to the southwest corner of the bell tower and take bus No.26, 1 yuan.
Go to Cuihua Road or History Museum Station and check your ID card (estimated at 8: 30).
Please complete the tour in two hours.
Then take 1 station road to the East to the Big Wild Goose Pagoda. Considering that the time is to eat first, look at the fountain in advance. (1 1 point or so)
Generally, the Big Wild Goose Pagoda Fountain starts from 12, and there is 30 minutes of musical fountain performance time.
There are many snacks around the Big Wild Goose Pagoda Cross, such as noodles, cold rice noodles and China steamed buns.
Then take bus No.409, take the coin-operated 2 yuan (too many, I can't remember) and get to Nanmen Station (12: 50).
There are many fake and real tourist souvenirs in the south gate and east gate. Pay attention to bargaining.
Then go north and stop at 1 to the bell tower (14).
Buy tickets to visit the bell tower.
Walk 300 meters west to the Drum Tower (14: 30).
To the north of Drum Tower is Huimin Lane. You can have a quick visit and buy some souvenirs (mainly food).
Take the underpass south from the Drum Tower and walk 200 meters south. On the east side of the road, there is Fan Ji Chinese hamburger, which is very famous. Eat it as soon as possible.
Go back to Meilun Hotel as soon as possible after eating. I remember that the bus leaves on the hour and the running time is close to 1 hour.
Your flight is at 6: 30, and you should get on at 4: 00 at the latest.
You can also take a taxi outside the shuttle bus, but it is more expensive and the time can be faster.
Suggestions on the overall progress. Time is tight as a whole. It's up to you to decide whether to go to Shuyuanmen and Huimin Lane.