It should be "Ksitigarbha Bodhisattva" by Black Duck. You can find it on NetEase Cloud Music. Here are the lyrics. Search and listen to see if it is this song.

: Praise to Ksitigarbha Bodhisattva

Composer: Xin Yun Chuan Yin

Singer: Black Duck

Album: Listening to Buddha

Ah Di Ksitigarbha Bodhisattva makes a great vow to save all sentient beings from suffering

Won’t all sentient beings be liberated from suffering? Oh, I vow not to become a Buddha

Ksitigarbha Bodhisattva makes a great wish to save all sentient beings from suffering

The suffering of all sentient beings will not be liberated? Oh, I vow not to become a Buddha

Oh Namo Ksitigarbha Bodhisattva? Ksitigarbha Bodhisattva

Save all living beings Ksitigarbha Bodhisattva Ksitigarbha Bodhisattva

Ah Namo Ksitigarbha Bodhisattva Ksitigarbha Bodhisattva

Rescue all sentient beings from the sea of ??suffering, Ksitigarbha Bodhisattva

Ah Ksitigarbha Bodhisattva I have made a great vow to save all sentient beings from suffering

I will not become a Buddha until the suffering of all sentient beings is relieved

O Ksitigarbha Bodhisattva, I have made a great vow to save all sentient beings from suffering

Unless the suffering of all living beings is relieved, I swear that I will never become a Buddha

O Namo Ksitigarbha Bodhisattva Ksitigarbha Bodhisattva

Save all living beings Ksitigarbha Bodhisattva Ksitigarbha Bodhisattva

Ah Namo Ksitigarbha Bodhisattva Ksitigarbha Bodhisattva

Rescue sentient beings from the sea of ??suffering, Ksitigarbha Bodhisattva

Ah Namo Ksitigarbha Bodhisattva Ksitigarbha Bodhisattva

Save all living beings, Ksitigarbha Bodhisattva, Ksitigarbha Bodhisattva

Ah Namo Ksitigarbha Bodhisattva, Ksitigarbha Bodhisattva

Save all living beings from the sea of ??suffering, Ksitigarbha Bodhisattva