1, large 1.5 means that the total number of goals is less than 1.5, and 1.5 wins the first round; Large 1.75 means that the total number of goals is less than 1.75, and 1.75 wins.
2. The importance of the game is an important parameter to judge the team's fighting spirit. When the league matches reach the critical stage of winning or losing and relegation, some teams at the bottom will increase their offensive efforts in order to get points ashore. This will lead to an increase in the probability of scoring and conceding goals at the same time, and a higher probability of playing a big ball.