Why do many MTVs filmed in Taiwan Province Province have a green feeling?

In order to make the picture look more unified and lyrical

It looks more beautiful, and I often do it.

Actually, there's nothing mysterious about it. As long as a green filter is added in front of the camera or camera lens, the effect of turning the picture green can generally be achieved. This effect can also be achieved in computer post-production, but post-production will make the picture more stiff and generally not recommended, mainly to make the picture containing natural scenery more beautiful and closer to nature. If you use green filters on portraits, the purpose is to make people more pure white, so wedding photography is often used.