One-sixth winning rate refers to the probability of random selection such as drawing lots or drawing lots, that is, the possibility of being selected. If one sixth is the winning rate, it means that there are 1 winners and 5 winners, and the winning rate is 1/6, which is about 16.7%. Compared with other high winning rates, such as one-third (33.3%) or half (50%), one-sixth winning rate is relatively low.