First of all, from the perspective of trading time, the new trading system is divided into day trading and night trading. The daily time is 08:00- 14:30, and the evening time is 16:00- 18:00 (both Beijing time). Japanese rubber opened earlier than Shanghai rubber and closed later than Shanghai rubber, so the opening price and closing price of Japanese rubber will guide the trend of Shanghai rubber on the same day and the next day, thus increasing the international status of Japanese rubber.