How much do you know about the general situation, common sense and rules of ice hockey?

Ice hockey originated in Canada and is a traditional event of the Winter Olympics. 1920 was included in the Summer Olympic Games. Ice hockey is a sport in which two teams of players hit the puck into each other's goal on the ice. Ice hockey is also called ice hockey. The ice hockey competition of Beijing Winter Olympics was held in Beijing Division, and * * * produced two gold medals. There is a solid boundary wall around the skating rink, and two blue lines divide the skating rink into three areas, namely, the defensive area, the central area and the offensive area. The attacker can't enter the blue line of the attack area before the ball, catch or touch the ball first, otherwise it will be judged offside. The ice hockey game is fierce, with clubs in hand and tooth protection equipment. Female athletes, goalkeepers and young athletes have special rules.

There are nine playing points and five playing circles with a radius of 4.5m The center playing point is blue, and all other playing points are red. At the beginning of each game and after each game is stopped, there will be a ball game with six players from each side. The game lasts for * * * three games, the net match time is 20 minutes, and the intermission 15 minutes. A draw requires extra time. The first round of the competition lasted five minutes in overtime, with four players playing a game, and other rounds of bronze medal battles. Overtime 10 minutes, gold medal battle for 20 minutes, all five people.

Overtime takes the form of sudden victory. Once the goal is scored, the game is over and overtime is still a draw. The winner is decided by shooting. There is no limit to the number of substitutions in the game, and the penalties for players' fouls are very severe, including small penalty, team penalty, big penalty, serious foul and suspension. Players who are punished need to stay in a special area. When the goalkeeper is awarded a small penalty, other players on the field will be punished instead. There are often differences in the number of people in the competition.

Known as the "crown jewel" of winter sports, ice hockey is the only collective ball game in all events of the Winter Olympics. Ice hockey has a history of more than 60 years in China. Ice hockey in the Winter Olympics is different from other events. Under normal circumstances, the organizing Committee will not give the host country the right to "go through customs". Only by virtue of strength can we enter the top group of ITTF World Championships and qualify for the Winter Olympics. The official unanimous approval of the China men's and women's ice hockey team as the host of the 2022 Beijing Winter Olympics broke the FIBA's practice of not allowing the host team to directly participate in the Winter Olympics. China men's ice hockey team will make its debut in the Winter Olympics, while China women's ice hockey team will make its debut in the Winter Olympics after Vancouver.