Hi, the weather is not that cold here in Beijing recently. So winter clothes is not needed. But hmm... it depends on where you come from a bit. Philippines is not as cold as beijing and if you prefer being hot, then to bring a jacket with you. But for me, just a shirt and a jean would be ok. The power supply is normally 220 Volts but if you stay in a five-star, there probably would be a 110 V for shaving. But just in case, to bring adoptor would be a good idea. And you are welcome^-^