Pick up small comforts at this duty-free foodstuffs and sundries shop. Thirsty? Try China’s popular pu’erh tea ($10) or a bottle of fiery Moutai, a fermented sorghum liquor from Guizhou, in southwest China ($125). Peckish? Don’t miss the salty roasted watermelon seeds ($4) or a dried and vacuum-packed roasted Peking duck ($25). Forgot your toothbrush? Three yuan (44 cents) buys a new one.