双向监禁 (Shuāngxiàng Jiānjìn)

Background
"Shuāngxiàng Jiānjìn" is an original Luo Tianyi and YANHE duet song. It is meant to be a trio song with Yuezheng Ling, who borrowed YANHE's voice as she did not have her own at the time. It is the fifth song of the Bidirectional Series.

In the song, Tianyi kills Ling out of pure jealousy and she mailed Ling's head to YANHE in order to imprison him. However, the plan backfires as she was arrested by the police and as a result, YANHE was sent to an asylum due to the experience becoming maddening for him.

After Ling received her own voicebank in 2015, her vocals were used to sing the song in the album Shuāngxiàng·Lúnhuí yǔ Xìngfú.

This song exceeded 100,000 views on bilibili.