Air Canada said it suspended plans to restart operations on Sunday after the union representing 10,000 flight attendants said it will defy a return to work order.

The strike was already affecting about 130,000 travelers around the world per day during the peak summer travel season.

The Canada Industrial Relations Board ordered airline staff back to work by 2 p.m. Sunday after the government intervened and Air Canada said it planned to resume flights Sunday evening.

Canada’s largest airline now says it will resume flights Monday evening. Air Canada said in a statement that the union “illegally directed its flight attendant members to defy a direction from the Canadian Industrial Relations Board.”

“Our members are not going back to work,” Canadian Union of Public Employees national president Mark Hancock said outside Toronto’s Pearson International Airport. “We are saying no.”

The federal government didn’t immediately provide comment on the union refusing to return to work.

China’s economy slows in July

China’s economy showed signs of slowing in July as factory output and retail sales slowed and housing prices dropped further, according to data.

Uncertainty over tariffs on exports to the United States is still looming over the world’s second-largest economy after President Donald Trump last week extended a pause in sharp hikes in import duties for 90 days, following a 90-day pause that began in May.

As officials worked toward a broader trade agreement, China reported earlier that its exports surged 7.2% in July year-on-year, while its imports grew at the fastest pace in a year, as businesses rushed to take advantage of the truce in Trump’s trade war with Beijing.