It should be "Love Must Be Magnanimous" sung by singer Ding Ding in "The Voice of China"

The lyrics are:

da la la la...

The sky is a bit dark and the atmosphere is a bit blue

The bright moonlight looks particularly bright

The dialogue is very simple and looks like a delicate dress

It seems It's so popular

Don't be too nervous. It's a little hard to be honest

Maybe perfection is an illusion to me

In the past, I didn't want to talk about my shortcomings.

I want your naturalness

Love must be magnanimous

Don’t pretend to be forever

I want you to be kind

Even if it’s right I am also warm when I lie

Please be honest

There is no perfect romance in the world

The vows people say

The real pity

Don’t you have the despair of being betrayed by love