Group 1 - The article highlights that 51 stocks appeared on the Long-Short list this week, with 37 showing net purchases from the Shenzhen Stock Connect [1] - The top three stocks with the highest net purchases were Changying Precision, Kaimete Gas, and Shanzi Gaoke, with net purchases of 407.68 million, 293.35 million, and 247.44 million respectively [1] - The average increase for the stocks with net purchases was 12.34%, outperforming the Shanghai Composite Index, which fell by 1.30% [1] Group 2 - The stock with the largest increase was Boliang Optoelectronics, which saw a cumulative rise of 47.15% this week [1] - There were 14 stocks with net sales, with Huagong Technology and Sanhua Intelligent Control having the largest net sales of 439.84 million and 180.36 million respectively [2] - The detailed table lists various stocks along with their net purchases, weekly price changes, and turnover rates, indicating significant trading activity [1][2]