Footage of heavy smog in Macau, which led to flights being delayed and cancelled.

The video, captured in Macau, China last Saturday, shows just how bad visibility became at the weekend.

Large amounts of passengers can also be seen stranded at the airport.

According to local reports, more than 70 flights were delayed or cancelled on March 18 and the chaos continued into the 19th.

A boat carrying more than 70 passengers also crashed into a bridge near Macau on Saturday because the crew couldn't see where they were going. Fortunately, no one was injured.