Group 1 - The Hang Seng Index fell by 0.25%, down 59 points, closing at 23,581 points, while the Hang Seng Tech Index decreased by 0.62% [1] - Hong Kong's stock market saw a trading volume of HKD 110.1 billion in the morning session [1] Group 2 - BYD Co., Ltd. (01211) increased by 3.53%, with new energy vehicle sales in the first four months rising by 46.98% year-on-year, surpassing Toyota in Singapore [2] - NetEase-S (09999) rose by 1.8% ahead of its quarterly report release and an annual product exhibition next week [2] - Weimob Group (02013) surged by 20% following the establishment of an e-commerce product department by WeChat, indicating potential in AI development and WeChat small store business [2] - Tencent Music Entertainment Group (01698) rose over 7% post-earnings, with a steady increase in ARPPU and a 22.8% year-on-year growth in net profit for the first quarter [2] - Yixin Group (02858) saw an intraday increase of over 7%, with financing amounts facilitated by its fintech platform rising by 56.5% year-on-year in the first quarter [2] - China Tobacco Hong Kong (06055) increased by over 7%, signing a contract with Mengkun to boost its duty-free cigarette business, with potential for resource integration within the China Tobacco system [2] - Junshi Biosciences (02696) rose by over 6% after granting Sandoz AG rights for the development, production, and commercialization of product HLX13 [2] - Bruker Corporation (00325) saw a 6.48% increase in early trading, with a recent surge in new product launches indicating potential for high growth [2] - Dekang Agriculture and Animal Husbandry (02419) increased by over 11%, reporting sales revenue of HKD 1.867 billion from live pig sales in April, leading the industry in per-head profitability [2] - Xindong Company (02400) rose over 6% with the international launch of "Yise" scheduled for June, expected to further drive performance growth [2] - Beike-W (02423) fell by 4.14%, with a quarterly report set to be disclosed today, and institutions remain cautious about its profit outlook [2] Group 3 - MicroPort Scientific Corporation-B (02252) fell by 3.63% after announcing a discounted placement to raise funds, with the controlling shareholder cashing out nearly HKD 470 million [3]