Core Viewpoint - The article discusses the recent investment activities of Dong Chengfei, the Chief Research Officer of Ruijun Asset, highlighting new positions in Yangjie Technology and Rabbit Baby, while reducing holdings in Chipeng Micro [2][9]. Group 1: Yangjie Technology - Dong Chengfei's Ruijun Youfu No. 1 private equity fund has newly entered the top ten circulating shareholders of Yangjie Technology, acquiring 2.5533 million shares with a reference market value of 133 million yuan, accounting for 0.47% of the circulating shares [5][6]. - Yangjie Technology reported a total revenue of 3.455 billion yuan in the first half of the year, a year-on-year increase of 20.58%, and a net profit attributable to shareholders of 601 million yuan, up 41.55% [7]. - The company's stock price has increased approximately 34% year-to-date, recovering from a drop to 37.59 yuan per share in April to around 58 yuan per share [7]. Group 2: Rabbit Baby - Ruijun Youfu No. 1 private equity fund has also newly invested in Rabbit Baby, holding 6.068 million shares with a reference market value of 59 million yuan, making it the ninth largest circulating shareholder [10][11]. - Rabbit Baby reported a revenue of 3.634 billion yuan in the first half of the year, a year-on-year decrease of 7.01%, while the net profit attributable to shareholders was 268 million yuan, an increase of 9.71% [12]. - The stock price of Rabbit Baby has declined approximately 8.8% year-to-date [13]. Group 3: Chipeng Micro - Ruijun Youfu No. 1 and No. 3 funds have reduced their holdings in Chipeng Micro by 420,000 shares, bringing the total holdings down to 2.4158 million shares, with a reference market value of 135 million yuan [15]. - Chipeng Micro achieved a revenue of 636 million yuan in the first half of the year, a year-on-year increase of 40.32%, and a net profit attributable to shareholders of 90 million yuan, up 106.02% [14].