Chairperson & CEO Du Ying exercised 263,747 units of American Depositary Shares at a strike of $1.72, covered exercise/tax liability with 116,936 units of American Depositary Shares and sold $20,363 worth of American Depositary Shares (1,067 units at $19.08), increasing direct ownership by 15% to 1,109,905 units (SEC Form 4)