Hong Kong stocks closed down 168.44 points, or 0.73 percent, at 22,901.41 on Tuesday. The benchmark Hang Seng Index traded between 23,084.88 and 22,857.26. Turnover totaled 49.42 billion HK dollars (6.38 billion U. S. dollars). (1 U.S. dollar = 7.75 HK dollars)