Is it better for children to practice calligraphy online or offline?

Personally, I think online class is better, and online class is not unheard of. Children attend classes once a week for two hours at a time. Every time he comes back from class, the piece with the pen between his middle finger is red, and it takes too long to write. Children can't stand it at all, but because they work offline, there is no way and no progress. Later, I didn't think it would work, and then I rubbed my fingers on the Internet. I write for half an hour at most every day, which greatly shortens the time, but fortunately I practice every day and the frequency of practice has increased. After practicing for more than half a year, the child's handwriting is obviously much better, and it is more convenient to pick up and drop off classes online.