At the Badminton World Cup , the duo failed in the third round, but won the silver medal at the Southeast Asian Games that same year . Singapore also secured third place in the team classification. 2010 turned out to be the most successful in Lei's career to date. Together with Sari she won four tournaments - at the Romanian International she was also successful in mixed. In June both of them won the India Open and the Singapore Open within a week . It was their first Grand Prix Gold and BWF Super Series titles. The latter in particular was remarkable in that they were eliminated in the first round last year. Both received frenetic cheers in the city-state as they were the first ever to win Singaporeans in the history of the tournament. The duo was ranked 23rd in March 2010, 19th in June and 10th in the women's doubles world rankings in September. With Chayut Triyachart, Lei was in 16th place in mixed in mid-September.