An engineer takes a measurement on a relocation project for the main building of Huanghe (The Yellow River) Museum in Zhengzhou, Henan Province, on Thursday. The museum will be relocated 100 meters to the east to make way for construction of the city’s Metro network. The museum will be moved back to its original site after the construction is completed. The museum was built in 1955 and is one of the world’s oldest museums dedicated to a river.Xinhua