In a conversation with reporters, journalist Kim Ngan shared the process of meeting, talking and listening to the life of a girl who used to be a playboy. The girl has eyes like a doll, was tricked and sold into prostitution when she was only 17 years old. The character's name was later changed by journalist Kim Ngan to Quynh Bup Be.
According to journalist Kim Ngan, in the process of adapting the story into a film script, the journalist imagined a female lead with beautiful and sad eyes. Screenwriter Kim Ngan revealed that she is very impressed with actress Kieu Anh - who starred in the film "Forever is the Sky" directed by Do Thanh Hai.
Screenwriter Kim Ngan commented that Kieu Anh has beautiful, attractive eyes. As a screenwriter, journalist Kim Ngan really wanted the role of Quynh Bup Be to be given to Kieu Anh. The journalist suggested this to the crew. However, Kieu Anh refused this role after reading the script. Quynh Bup Be was then assigned to Phuong Oanh.
Phuong Oanh started out as a model, she is known through many film projects, notably " Quiet in the abyss". In this film, Phuong Oanh also co-starred with co-star Doan Quoc Dam. They get caught up in an unjust love triangle, then fall into a marriage tragedy together. Sua (Phuong Oanh) did not love Phong (Doan Quoc Dam) but was arrested to become his wife. The days at Phong's house are a series of tearful times of Sua...


The harmonious combination of "S still in the abyss" led to the next collaboration between Phuong Oanh and Doan Quoc Dam in "Quynh Bup Be". They continue to fall into the adversity of a love at the cross. Canh (Doan Quoc Dam) - from a cold, cruel protector in Thien Thai Cave, fell in love with Quynh Bup Be (Phuong Oanh). Their love was "shipped" by the audience, hoping to become a couple.
The audience loved Canh - Quynh so much that Canh's death created a wave of reactions after this episode aired.
After 7 years, Phuong Oanh and Doan Quoc Dam act together for the third time, they play a couple who will have to go through a storm of marriage. In the original "30 is not the end", the marriage would break down when a third person crowded in. However, speaking at the press conference to launch "Gio ngang troi xanh", Doan Quoc Dam said that his character will be different from the original.
The original version may be adjusted differently, but the marriage between My Anh (Phuong Oanh) and Dang (Doan Quoc Dam) is predicted to go through many storms.

In all 3 collaborations since "S still in the abyss" in 2017, whether playing a couple in love or a couple, the relationship between the characters portrayed by Phuong Oanh and Doan Quoc Dam all went through suffering and misfortune. And in the end, they all had to say goodbye to each other.
Phong and Sua, or Canh and Quynh, were separated at the end of the film. If "The Wind Across the Blue Sky" ends like the original, My Anh and Dang will also divorce.