Before dusk, head west toward the Drum and Bell Tower, located at the south of Hou Hai lake on Gulou Dajie, where you can wiggle your way down the hutongs once more.
"Sean is not the stereotypical cop who is kind of intimidating, but rather a friendly and down-to-earth kind of guy that you would want to be friends with, " David Hou, an MIT sophomore, told CNN.