I prefer this ancient castle over the imperial mansions

"The number one ancient castle of the Ming Dynasty in northern China" - Xiangyu Ancient Castle, how is it so impressive? 📍Xiangyu Ancient Castle 📝Attraction: Originally named Xianggu, Xiangyu Ancient Castle is known as the ancient city of Sandu 🚌: Take bus 208 | Get off at Xiangyu Ancient Castle Station ⏰: All day 🎫Ticket: 65RMB (free entry at night) 🅿Parking fee: 10 yuan, no time limit. Xiangyu Ancient Castle consists of city walls, ancient wells, residential houses, temples, and watchtowers. The city walls are tall and solid, with watchtowers and battlements on top, demonstrating the castle's defensive capabilities. The city walls of Xiangyu Ancient Castle are bonded with a mixture of egg whites and glutinous rice juice, making the seams as thin as paper and as solid as rock. The courtyards and houses within the castle are interconnected through a web-like network of winding and dense alleys. The hidden soldier caves on the south city wall combine the functions of defensive works, barracks, and military supply warehouses into one, with multi-level corridors and interconnected soldier tunnels forming a complex and complete defense system. Xiangyu Ancient Castle, with its strong defensive capabilities, has never been breached from the outside since its construction. The tallest building in the castle, the five-story 'Guardian Tower' (also known as the 'Watchtower'), is the tallest surviving building from the Ming Dynasty in China. Xiangyu Ancient Castle is only 6 kilometers away from the imperial mansions and can be visited together.