Note B: Moscow-Beijing Trans-Mongolian express, see here for photos & information & see here for an illustrated account of the journey. Leaves Moscow every Tuesday eastbound, leaves Beijing every Wednesday westbound. Operated with Chinese coaches & staff. 1st class 2-berth, 1st class 4-berth, 2nd class 4-berth. Russian restaurant car whilst in Russia, Mongolian restaurant in Mongolia, Chinese restaurant in China. Note that if you're trying to buy a ticket from Ulan Bator to Beijing, berths on train 4 can only be booked within 24h of departure from Ulan Bator, so you'll find it much easier to use train 24 instead.