As long as adults can keep writing 1-2 hours a day, no matter whether it is hard or soft, the result is still very fast. One is to buy a regular calligraphy sticker with a detailed introduction of stroke structure and font shelf, and the other is to find a professional teacher at the primary stage, which will make faster progress. Once the first semester is over, you can study independently. However, after a period of time, you should ask a professional teacher for guidance, and you can also ask difficult questions in practice.