Songzan Gampo is the incarnation of Bodhisattva. Why are there descendants?

First, whether Songzan Gampo is the incarnation of Bodhisattva is not just an expression. If it is really the incarnation of Bodhisattva, it is bound to show all kinds of unusual behaviors to persuade practitioners to bring all beings into the Buddha Sea. For example, show extraordinary wisdom, miraculous magical power and so on. There is only one purpose, to cooperate with colleagues and capture all beings. However, according to the Shurangama Sutra, the bodhisattva Lohan did not claim to be the true bodhisattva Lohan, and the Buddha warned the bodhisattva Lohan not to show his magical powers at will, so the only basis for judging is his extraordinary wisdom, which is the insurance basis for testing whether he is the incarnation of Buddha and Bodhisattva. For example, Shi, the famous emperor of Liang Dynasty, is Maitreya Buddha and Bodhisattva. What is certain is that the teacher's wisdom is absolutely superior-at that time, both the teacher and the famous Zen master Dharma were lovers.

Second, before Sakyamuni became a monk, he had a son named Luo. Moreover, Vimalakīrti, a great bodhisattva of the Buddha's contemporaries, has a wife and children, and Vimalakīrti, a Buddhist, is the embodiment of other Buddhas in my concubines' world. In order to attract all beings conveniently, avoid being too different from all beings, and show the present and the future conveniently.

Judging from this, we naturally know the result.