Terracotta Army Museum
Plan about 2–3 hours inside plus travel, security and queues; use an authorized transfer/guide or verify public bus details.
Ancient capital, city wall and the Terracotta Army. The army is outside the centre, so reserve a dedicated excursion with transport. One night here (23 Dec), then the 23:06 K507 overnight sleeper from Xi'an East to Chongqing North on 24 Dec.

Plan about 2–3 hours inside plus travel, security and queues; use an authorized transfer/guide or verify public bus details.
Choose a gate and short wall section; cycling the full circuit is not necessary and may be strenuous.
Food streets and historic lanes; lively in the evening and crowded at peak times.
Historic Buddhist landmark and surrounding plaza; evening fountain schedules vary seasonally.
Excellent regional history collection; advance reservations and weekly closure rules may apply.
Xi'an Metro Local bus timetable information China Railway tickets
Allow at least a half-day round trip to the Terracotta Army from central Xi'an; cross-city transfers and visitor entry are separate from museum visit time.