How long does it take to practice calligraphy at least?

To practice calligraphy, my personal opinion is: first of all, you must have talent. Then practice the strength of the wrist. A beautiful and vigorous word must require moderate wrist strength, balance point and steady hand. Often the words written by the master are vigorous and natural, which is directly related to the strength of the wrist. With these two foundations, you can start to study hard and practice hard. Of course, you are not blind during the practice. You should know that you are making progress and look for tips. Generally speaking, perseverance is the most important thing, not less than 2 hours a day.