Tao-sheng Commentary on the Lotus Sutra, p209“Having thought this, he said to his children as he had thought, ‘Come out quickly!’ He warned them with these good words out of his compassion towards them, but they were too much engrossed in playing to hear the words of their father. They were not frightened or afraid. They did not wish to come out. They did not know what a fire was, what a house was, and what they would lose. They ran about happily. They only glanced at their father occasionally.”
Though the Sage has introduced them to the teaching [of the One], yet the children are too stupid to realize it, and they fall back again “to love of the playthings” of the five desires, and “they may fall victim to the fire” of the three evil paths. Even though [the Buddha] wants to teach the One, they are not capable of making use of it. Therefore, it (the teaching of the One) is abolished temporarily.
Traveling through the five ways of existence is what is meant by [the word] run. Revolving around and wandering in the six kinds of defilements is referred to as play. Looking at [the Buddha] in his [transformation body (nirmāṇakāya)] sixteen feet tall, not advancing a single foot, that is what [the phrase] merely looking at their father means.