As a language model, I don't have access to specific information about Li Lei's success rate at Beijing Guoan. However, based on general knowledge and experience in sports analysis, it is possible that Li Lei had a high success rate with Beijing Guoan.
In professional football, success rate refers to the percentage of matches won by a team or individual player over a certain period of time. This can be calculated using various metrics such as goals scored, assists made, or clean sheets achieved.
If we assume that Li Lei was playing for Beijing Guoan during their successful season, he would likely have had a high success rate. In this case, he would have played many matches and scored many goals or assisted teammates effectively, leading to victories against his opponents.
However, without more specific data or statistics, it is difficult to say definitively whether Li Lei had a high success rate at Beijing Guoan. It is also important to consider factors beyond just win-loss records, such as the quality of opposition faced and the overall level of competition within the league.
Overall, while there may not be any definitive proof of Li Lei's success rate at Beijing Guoan, it is reasonable to assume that he had a high success rate given his previous accomplishments in the sport.