The Heart of the Buddha's Understanding

The two truths is a teaching usually associated with mahana buddhism. It comes up in relation to the emptiness teachings. Emptiness is the absolute teaching, all darmas are empty. But as the hard sutra also says, what is emptiness? Stands for forms, feelings, perceptions, impulses and consciousness,. which is a relative teaching. And the heart sutra saying that these are not two separate and int truths, they are the same truth.