On 30 October, a total investment of approximately $6 billion was made, with the 900,000 kilowatt-ray voltage project in Xinjiang City accompanied by a network of 100,000 kilowatts of saline-type photothermal power plants, the first such plant in Changi. In the light-voltage park of Zhuangkang City, 15,697 fixed mirrors were distributed in circular order over the walls of some 289 football stadiums, and the mirrors were constantly adjusted in the light of changes in the direction of sunlight exposure, bringing together a precise reflection of sunlight to the heat tower collector at a central location of 236 metres high