[3] Musician Vo Thien Thanh said that Hong Nhung was the one who proactively invited him to compose an electronic song for this project, and this is the reason "Vòng Tròn" was written.

[2] The song's music video is said to have a "transformation" compared to Hong Nhung's image from previous studio albums, with the content "suggesting a message such as a philosophy of life with the yin and yang circle, the reincarnation of creation, the strong, the weak, the good, the evil".

The purpose of this video is to help viewers realize "happiness is living, and the meaning of life lies in the journey between good-evil, red-black, birth-death... like an endless cycle."

"Nghịch Nắng" and "Trở Về" refer to Hong Nhung's own nostalgia for Hanoi – a city where the singer was born.

[7] Some viewers believe that Hong Nhung's image in the album is somewhat younger than her age, and that the fashion style or hairstyle she shows is only suitable for teenagers.