yesterday, the cruise ship passed the new gray pool spring on the west side of the Quancheng Square. After a month of intense construction, the overall environmental improvement project of the ash pond has been basically completed. It is known that the grey pool springs were listed as one of the seventy-two springs in Ji'nan in the three dynasties of Jin, Ming and Qing. They were buried in the early twentieth Century, and were re excavated in 1986. In order to improve the environment of the city park, the relevant departments began to repair the whole environment of the grey pool spring in August this year. After the repair, the grey pool spring is surrounded by natural stone, the center is a reservoir, the spring water comes into the waterfall into the moat, and the "big living room" and the riverside will add a beautiful "Pearl". Reporter Cui Jian