Winter in Bei Jing is cold outside but warm inside. The temperature outdoor is low, while indoor is pretty high. If you want to go out, you need to wear cold coat, muffler and golves. But if you stay at home, it's ok to wear summery's dress. In winter, the instant-boiled mutton restaurants of Lao Bei Jing are usually crowded. Put the thin-cut mutton piece into the hot pot, tenderly, with the appetizing sesame soy, emmm... how delicious!