On the evening of September 20, actor Truong Lang Hach and singer and actress Au Duong Na Na performed the song "Hoa ban thuyet hi" at the movie music night "Wing Khuat thang minh nguyet" 2026 in Macau (China). The performance received attention as this is a new song performed by the two artists for the first time on stage.
After the performance ended, Truong Lang Hach said a small sentence "Thank you" but his microphone suddenly did not sound. Meanwhile, Au Duong Na Na's thanks next to him were still clearly heard. The video recording this moment quickly spread on social networks, leading to suspicions that the male actor used a pre-recorded version in the performance.
Some viewers believe that if Truong Lang Hach sang live, his voice when greeting the audience would not suddenly disappear. Many comments analyzed that the fact that the "thank you" sentence has no sound may be a sign that the previous vocal part was played from a pre-recorded version. Some accounts even called this evidence for lip-syncing suspicion.
However, Truong Lang Hach's fans gave a different explanation. Some people reposted the rehearsal video and said that the sound in the rehearsal and the official performance were quite similar. They believe that the microphone loss may simply be a technical problem on stage.
Some audiences present at the event also said that just relying on a few seconds of the microphone losing its volume was not enough to conclude that the male actor lip-synced.
Truong Lang Hach is also not the only artist questioned after the music night.
In the "Vũ đạo phố" performance, Ta Kim Yen and Luu Vu Han performed together. Some videos show that Ta Kim Yen did not hold the microphone but still had a singing voice, which made the audience continue to discuss the use of pre-recorded sound.
The debate also expanded to the use of supporting sound in large-scale live programs. According to a part of the audience, for artists who are not professional singers, the program may use pre-recorded or supporting sound to ensure broadcast quality.
The debate about Truong Lang Hach's performance has not subsided. However, the actor has not yet responded to this noise.
