translation.en: And then I made great progression to the point where I could walk around the house, holding onto the walls, like this, and Mom said she was forever following me, wiping off my fingerprints.  But at least she always knew where I was.
translation.zh: 后来我取得了很大进步， 能够扶着墙在屋子里走， 就像这样，而妈妈说她总是跟在我后面， 擦我的手印。 但至少她始终知道我在哪儿。