This is the Tathagatagarbha’s view. The emptiness in Mahayana is not existence. It means everything is impartment and it can change. As it said, the emptiness is the ultimate reality, the true nature of emptiness and it has self phenomena but it’s not existence and it can be change. One point here to note, the conception of emptiness in Mahayana tradition is similar to the word of impermanent in Theravada Buddhism. To support this idea, I have been found out more details which given the expression of emptiness in Mahayana tradition. Paul Williams, the author of Mahayana Buddhism, describes;