Hong Kong International Airport took the eighth spot on the list, and Shanghai Pudong International Airport was the ninth busiest.
Chinese outbound tourists heading to Singapore will soon be able to buy goods at Changi Airport with a wave of their WeChat Pay app.
According to the company, the rebates through WeChat are available in South Korea, Germany, Italy, Greece, and Finland, among others.
Purchase exceeding 500 yuan (about USD 80) in any of the 46 tax refund stores in Xiongan and neighboring cities of Zhangjiakou and Qinhuangdao are eligible for the policy.
ACI World has released preliminary 2017 world airport traffic rankings, with Beijing (PEK) and Shanghai (PVG) remaining in top 10, and Guangzhou (CAN) up to the 13rd position.
The recent SITA 2017 Air Transport IT Trends Insights report shows that 51 percent of airports are planning to implement biometric self-boarding gates by 2020.
Chinese mobile payment giants WeChat Pay and Alipay have teamed up with tax refund firms with the aim of easing the tax rebate process for Chinese tourists at airports.
The company also expect its income from investment to surge 33.8 percent year on year to 976 million yuan in 2017.
