Group 1 - The advertising and media industry is experiencing a resurgence due to the integration of AI, leading to significant stock price increases for companies like BlueFocus, which saw a 130% rise [2][3] - Several advertising and marketing companies, previously overlooked by public funds, have become targets for investment, with many not appearing in the top ten holdings of active equity funds for four consecutive quarters [2][3] - The media sector's valuation remains low, with the PE ratio of the media sector below 30 times, indicating potential for growth as funds shift focus to undervalued areas [3][4] Group 2 - Fund managers with backgrounds in media are capitalizing on the undervaluation of the advertising marketing sector, leading to significant net asset value increases for funds like GF Hong Kong and Rongtong Mingrui [5][6] - The sudden interest in advertising marketing is driven by the belief that it represents a prime opportunity for AI applications, with traditional sectors still holding value in the AI era [7][8] - Fund managers are identifying advertising and e-commerce as sectors where AI can quickly be implemented, enhancing efficiency and effectiveness in operations [7][8]