The Reds tried to recruit the Brazilian attacker in the winter transfer window, but failed to agree on terms with Shakhtar Donetsk.
Shakhtar have since confirmed Teixeira has moved to Jiangsu, who recently captured his compatriot Ramires from Chelsea.
"Shakhtar thank Alex for the time spent in the team and wish him success at his new club," Shakhtar said in a statement.
The Chinese Super League begins in March.