Group 1 - The Hong Kong Stock Exchange (HKEX) announced an optimization of margin collateral arrangements, adjusting interest payments on cash collateral and related fees to be calculated daily based on international market standards, specifically the overnight reference rate minus handling fees [1] - The financing cost for non-cash collateral has been reduced from 0.5% per annum to 0.25% per annum [1] - The Hong Kong stock market has shown strong performance this year, with the Hang Seng Index and the Hang Seng Tech Index rising by 27.70% and 29.79% respectively as of September 1 [1] Group 2 - According to HKEX data, from May to the end of July, long-term stable foreign institutional funds inflow totaled approximately 67.7 billion HKD, while short-term flexible foreign institutional funds inflow was about 16.2 billion HKD [3] - Many quality Hong Kong stocks have seen significant accumulation by foreign institutional investors [3]