Decades ago, very few Hong Kong people knew dancing. At that time, there were only singers in the night club, singing songs to amuse customers who had party in the night club restaurant. Gradually some aggressive owners of night club employed bands and made dancing floors. Then from that time on dancing began to be popular.
Also, many dancing teachers who were trained in the school came from China to teach dancing in Hong Kong. They earned a lot of money. When the Hong Kong dancing world was slowly prosperous, European dancers also rushed to Hong Kong. Some European dancers even settled down in Hong Kong and become Hong Kong citizens.
Dancing is very difficult to learn. For ordinary people, it is not necessary to learn good, a little enough for fun.
Profession dancers from Europe will go to England to join world competition in Blackpool which is the place of high qualification in dancing.
Every dancing has a fixed step and every dancer must follow the step to dance. But, in their dancing style, they can dance in their own way. Some dancers will include Russian Ballet taste, some Spain Flamingo taste, some Brazil Samba taste, some Argentina Tango, some Cuba movement. It is obvious that the more you learn the better you are. But, in the dancing world, it is in some way not fair. You cannot be champion even you are dancing is the best.