Yu has shown her practice.

Yu has shown her practice of writing, which connected the dots by lines. The lines were unstable but connected the dots somehow.

Coming up suddenly, I asked Yu, "can you subtract 7 from 93?" Yu showen 8 and 6 by her fingers. I was relieved. To tell the truth, this question had been made by my 87 years old mother. I had explained how to subtract to her, but she could not underdtand it logic.

Yu will recover soon to the level of before the outbreak. I am sure it.