Don't Go Down the Mountain Until You Reach Nascent Soul

I woke up deep in the mountains, and was rescued by a mysterious old man who went up the mountain. He accidentally activated the system and started the path of cultivation. I always thought that I was a waste, but I didn't expect that over time, I became the supreme king. Before he died, the old man told me that the outside world is extremely dangerous, and I must not go down the mountain until I reach the Nascent Soul.