Why is Thanos afraid of Master Gu Yi?

Have the ability to defeat Thanos, because this is the ability of the universe, but it is said that the ancient mage died because the guide did not say that he died because of lack of funds.

Later, he returned to modern times and cooperated with magician Adam to fight against the blackened magician, trying to build a dream empire through his cosmic truth church. Thanos and his allies help Adam's magic to ensure that Adam's dark magic will not appear in the future time and space. At the same time, he also completed the original plot-absorbing some energy from all Adam's soul stones.

Extended data:

Identity background:

Thanos originally belonged to the eternal family living on Titan, but for some reason he was exiled by his people. With the enhancement of his power and desire for control, he began a journey to the universe, during which he met the goddess of death. In order to win her heart, he began to slaughter his hometown and then got the tesseract with incomparable power.

He began to attack the earth with the help of the tesseract, and the heroes on the earth could not stop his evil deeds. He easily defeated heroes including Captain America and The Avengers.

Baidu Encyclopedia-Thanos