China Southern Airlines, the largest airline by fleet size in Asia, joined with Sichuan Airlines on June 16 to announce that more air express routes will be created between the cities of Guangzhou and Shenzhen in Guangdong province, Chengdu in Sichuan province and Beijing to provide more travel convenience for passengers, starting July.

According to the plan, the number of flights operated by the two major Chinese airlines between Chengdu and Beijing will reach an average of 16 a day, while the daily number of flights between Chengdu and Guangzhou will come to 14.

The daily number of flights between Chengdu and Shenzhen will reach seven, playing a big part in the expansion of cooperation and exchanges between Sichuan in Southwest China and Guangdong, the window of China's reform and opening-up.

Meanwhile the two airlines will provide a number of basic rights and value-added services to their passengers, said Feng Jing, a senior executive from Sichuan Airlines, at a press conference in Guangzhou on Tuesday.

"For example, passengers from Chengdu to Beijing, Guangzhou and Shenzhen will enjoy four exclusive rights and interests, including free interchange of airlines and air-ranges, convenient and quick check-in and transfer services," said Feng.

In addition, passengers who change flights within or between the two airlines will be exempted from change fees or refund fees.

The two airlines also signed a cooperation framework agreement on aviation ground service businesses on the same day.