Expensive investment in recent years by Qinghuangdao city in China's Hebei province to upgrade its landmark beach area into a charming and ecological coastline is reaping success. Since 2012, the city has invested a total of 4.3 billion yuan to carry out a comprehensive renovation program to improve the environment of the coastal area. As a result, sea water quality has reached the second level of the national sea water quality standard.The blue sea and golden beach present an amazing scene for tourists.[Photo/Xinhua]