In "Captain of China", why is Yuan Quan's "unkempt face" always highlighted?

I personally think this is the need of the plot, so in "Captain of China", Yuan Quan's "unkempt face" is highlighted. The main cast of "Captain of China" has been revealed. "The Captain" is adapted from the true incident of the Sichuan Airlines flight 3U8633's successful handling of a special situation on May 14, 2018. It is directed by Liu Weiqiang, written by Yu Yongyong, produced by Li Jinwen, and produced by Zhang Hanyu , Ou Hao, Du Jiang, Yuan Quan, Zhang Tianai, Li Qin, and co-starring Zhang Yamei, Yang Qiru, and Gao Ge. ?

The film tells the story of the members of the "Chinese Civil Aviation Hero Crew" and 119 passengers who encountered extreme dangers and faced multiple tests such as strong winds, low temperatures, and cabin depressurization at an altitude of 10,000 meters. In order to better shape their characters, Zhang Hanyu, Yuan Quan and other main creators collected stories on the spot, met with those who witnessed the incident, listened to the heroic crew reconstruct the situation at the time, and witnessed the historic moment of the "Chinese Civil Aviation Hero Crew"'s return to flight. Yuan Quan plays the role of Bi Nan in the film, a flight attendant who is resolute and professional. He remains calm in times of crisis. Although he is worried and frightened, he still shoulders his own responsibilities, stabilizes the morale of the military in the cabin, and tries his best to appease the people. In the end, he won the recognition and praise of passengers with his professionalism. Yuan Quan's performance in this film is remarkable, and he perfectly interprets the character of Bi Nan, the stewardess in the film.

The movie "Captain of China" is adapted from the real experience of Sichuan Airlines' heroic captain Liu Chuanjian. On May 14 this year, the windshield of Sichuan Airlines flight 3U8633 fell off during the flight. The proper handling of the incident by Captain Liu Chuanjian and other crew members and the timely coordination of the air and ground operations ensured the safety of the 128 people on board. Industry insiders generally believe that the difficulty of the half-hour return and landing is "world-class" and a miracle in the history of global civil aviation. For his outstanding operation in this accident, the captain Liu Chuanjian was awarded the title of "China Civil Aviation Hero Captain", and all the crew members were awarded the honor of "China Civil Aviation Hero Crew". This movie is perfect both in terms of plot and actors' acting skills, and it's worth watching.