[* ST Investment Holdings: controlling shareholders plan to increase their shares by not less than 20 million yuan] May 31, * ST Investment announcement, HNA Capital Group, the company's controlling shareholder, and HNA Investment Holdings, a concerted actor, plan to increase their holdings of the company by centralized bidding within six months at a price of not less than 20 million yuan (including) per share. As of May 31, the company's stock closing price has been lower than 1 yuan for 11 consecutive trading days.