1.No, they can be visited separately or combined, depending on your schedule: Summer Palace: Plan for 4–5 hours to explore its main areas: Longevity Hill with the iconic Tower of Buddhist Incense. Kunming Lake – take a boat ride to Nanhu Island or walk the 728-meter Long Corridor. Garden of Virtuous Harmony for traditional architecture and cultural displays. Old Summer Palace: Allow 2–3 hours, focusing on: The ruined European-style palaces, a historic symbol of cultural heritage. Heritage Sites Area and the scenic Xiyang Lou gardens. Optional: Rent a bicycle to cover the vast park more efficiently. 2.Winter Impact: From late November to early March, Kunming Lake freezes, but it does not close the park – instead, it offers unique experiences: Skating Activities: Part of the lake near the East Causeway opens for ice skating (extra fee, rental equipment available). Winter Scenery: Snow-covered pavilions and frozen lake views create a picturesque, tranquil atmosphere. Tips for Winter Visits: Wear warm clothing and non-slip shoes for icy paths. Check the Summer Palace’s official WeChat for real-time ice activity updates.