Sister's Chinese class

My sister is a Chinese language teacher in my home town, enjoy life with my brother in law and their son Liangliang(Bright bright) very cheerful.
She just designed and finished a class for Mother's day, it called " a song to mother". All her students make their preparation for that, some of them read a poem for mum, some of them brought some pictures of his mum and told a story, some used a sentence to express his love to mum.
It was the turn of a bad learning results student, Han Mingming, he stand up and said: I will sing the song "Mother" for mum.
Students were a little shocked at beginning, then they laughed as they know what his voice sounds like.
He begun to sing, in fact it was not sing, it was shout out. Other students begun to laugh quietly. In fact Han could chose a easy way like other students did, but he chose this way. My sister acknowledged that he wanted to laugh too, as a teacher, she couldn't do it.
Finally he finished, and my sister made a summary:
Every one has a good performance today, every one chose your way to express you understanding of mother and love from mother. The best performance is from Han Mingming, as he insisted on what he like and what he thinks is good, what is worth highly respect is he finished it with others' laugh.

Long lasting applause!