The A/H ratio is too different. According to the survey, a large number of foreign investors smashed shares in huaxin cement, and the reason for the sharp decline in shareholding was that the A/H ratio was too large. Instead of staying in Huaxin A, it is better to sell Huaxin A and buy Huaxin H at half price. B to H is the biggest failure. Fudge the B-share shareholders to support the successful conversion, and H-shares plummeted all the way, which directly led to the innocent drag of A-shares. To get rid of the current predicament of Shanghai Stock Connect, only the company can buy back H shares immediately and maintain the normal ratio of two shares. If it is not repurchased, the price difference between the two stocks will be so great that Shanghai Stock Connect will continue to smash and flee, and A shares will continue to fall.