The passenger's condition worsened, with persistent chest pain and increasing difficulty sitting upright.

Thirty minutes later, his condition deteriorated further. Feeling that he could barely hold on, he hesitated but expressed a wish to divert the flight for urgent medical attention, though he regretted the inconvenience it might cause to fellow passengers and the airline.

"Your life is the top priority. We will do everything we can to protect you," Li reassured him before reporting the situation to captain Wang Yean.

After assessing the situation and considering medical capabilities on the ground, Wang made a decisive call to divert to Shijiazhuang Zhengding International Airport.

He immediately requested an emergency landing clearance from air traffic control and coordinated to have doctors and an ambulance ready upon arrival.

That night, the flight's original destination, Shenyang Taoxian International Airport, was scheduled to close at 2:30 am. With the diversion to Shijiazhuang, it became uncertain whether the flight could still arrive in time.

However, following urgent coordination, Shenyang agreed to extend its closing time to accommodate the flight's delayed arrival.