HNA Group subsidiary Tianjin Airlines has received an additional CNY400 million ($63.3 million) investment from the Tianjin Bonded Zone Investment Co., representing Tianjin’s municipal government, to enhance the carrier’s competitiveness.

The airline was launched in 2009 as a joint venture between the HNA Group and the Tianjin municipal government. Currently, HNA holds an 87.3% stake in Tianjin Airlines while Tianjin Bonded Zone Investment Co. holds 4.2%, and Tianjin Chuangxin Investment Partners Co. owns the remaining 8.5% share.

HNA Group did not reveal any changes to the shareholding matrix after the additional investment.

HNA Group subsidiary Hainan Airlines in February 2017 completed the acquisition of a 48.2% stake in Tianjin Airlines, also an HNA subsidiary. Hainan Airlines reported profit decline in the 1H 2017 and the 2017 3Q, which the company in part blamed on horizontal competition between the carriers.

In recent months HNA Group chairman Chen Feng reportedly acknowledged the company faces a liquidity problem and its six subsidiaries have suspended stock trading. Last week, HNA received a CNY20 billion credit line from China CITIC Bank.