Group 1 - The construction of the lower reservoir for the Fujian Province Sanming City Yong'an Pumped Storage Power Station has been accused of serious quality issues, including significant cost-cutting measures during dam construction [2] - Reports indicate that hundreds of anchor piles used to reinforce the dam shoulder have severe quality defects, with actual lengths significantly shorter than designed, and some piles being less than one-third of the required length [2] - The construction company, China Water Resources and Hydropower Third Engineering Bureau Co., Ltd., is under scrutiny, and China Power Construction Group has established an investigation team to address the reported issues [2][3] Group 2 - The total investment for the Yong'an Pumped Storage Power Station project is approximately 7.5 billion yuan, making it the first large-scale energy storage project approved under Fujian Province's 14th Five-Year Plan [3] - The lower reservoir dam features a concrete-faced rock-fill design, with a height of 102.5 meters, a top elevation of 483 meters, and a top length of 267.5 meters, making it the tallest concrete-faced rock-fill dam approved in Fujian Province [3]