Complex sentence: Chengdu Shuangliu International Airport is among world's top 40 busiest airport in 2014, and in the same year, this airport handled 37.5 million passengers to rank the 5th busiest in mainland China and the busiest airport in Western China.
Split into simpler sentences: Chengdu Shuangliu International Airport is among world's top 40 busiest airport in 2014. In 2014 Shuangliu Airport handled 37.5 million passengers to rank the 5th busiest in mainland China and the busiest airport in Western China.