美股盘前，中概股多数上涨，哔哩哔哩涨约2%，百度涨约2%

Group 1 - The core viewpoint is that Chinese concept stocks are experiencing an upward trend in pre-market trading on August 4, with notable increases in share prices for companies like Bilibili, Baidu, and Xpeng Motors [1] Group 2 - Bilibili's stock price increased by approximately 2% [1] - Baidu's stock price also rose by around 2% [1] - Xpeng Motors saw a stock price increase of about 3% [1]