During President Xi Jinping's visit to Iran in January, China and Iran agreed to set up an annual meeting mechanism to deepen mutual strategic trust.
The explosion took place around midday on Saturday in Chifeng city in Inner Mongolia Autonomous Region.
About a quarter of over 146,400 cases recorded in the last four years involved use of public vehicles and eating and drinking with public funds.
Xi Jinping made the remarks at a two-day conference on military reform, which ended Saturday.
The fatal blast in the restaurant in Anhui Province on Oct 10, 2015 killed 17 people, a local court said Sunday.
The two nations will end capacity restrictions for air services and liberalize traffic rights and code share arrangements.
The airport authorities said the heavy fog disrupted the most flights and stranded the most passengers in years.
The collapse occurred at about 3:30 pm on Saturday in Baigudui Village of Jinan City, capital of Shandong Province.
Some areas in northern China are likely to see another day of smog as the national observatory issued an orange alert for air pollution earlier Sunday.
Foreign Minister Wang Yi said the Trump-Tsai phone call was a "petty action" by Taiwan.