At its last military parade in February, Pyongyang displayed what appeared to be intercontinental ballistic missiles like the Hwasong-15 missile, capable of delivering a nuclear weapon to any city on the United States mainland, in a thinly veiled threat to Washington.
Pyongyang residents have been training for months for the anniversary and held up the bouquets to spell out words and slogans that could be seen from the VIP viewing area.
Kim Yong Nam, North Korea's titular head of state, said during a speech at the parade that the country had achieved its status as a military power and would now be focusing on strengthening its domestic economy, the news service reported.
China's third highest ranking official Li Zhanshu (left) and North Korean leader Kim Jong Un wave to the crowd during a parade celebrating the North Korea's National Day and the 70th anniversary of its Foundation in Pyongyang, on Sept 9, 2018.
This gallery was curated by Associated Press photo editor Wally Santana in Bangkok.
There was no sign of the Hwasong-14 and -15 missiles that can reach the mainland United States and changed the strategic balance when they were first tested a year ago.
These reports loom large over the North Korea anniversary celebrations - which are expected to be centred round a spectacular parade in Pyongyang.
This November 29, 2017, file image provided by the North Korean government on November 30, 2017, shows firing of what the North Korean government calls the Hwasong-15 intercontinental ballistic missile, at an undisclosed location in North Korea.
A North Korea "civic group" has disclosed a statement urging the withdrawal of USA forces from the peninsula. "So I think it will be well received". While his current focus is on global diplomacy and domestic economic development, he commands both a nuclear arsenal and an intercontinental ballistic missile force.
The message from the group, that directs its propaganda mainly at the South, included a condemnation of the United States for the "most barbaric massacre" during the 1950-53 Korean War.
During the parade, people waved balloons, flowers and flags as goose-stepping soldiers, tanks and floats passed by.
"All Koreans should join forces to accomplish unification in our generation".
The focus on the military and civilian sectors was not new to celebrations of North Korea's founding.
That evoked a complimentary tweet from Trump who wrote: Thank you to Chairman Kim. He claims to have perfected his nuclear arsenal enough to deter U.S. aggression and devote his resources to raising the standard of living. The two leaders pledged to "work toward complete denuclearization of the Korean Peninsula" without setting a timetable or explaining what that means.
Mass games performed by tens of thousands of people working in precise unison take months if not years of intense preparation and training, and have not been staged since 2013.
Tickets to this year's spectacle started at just over US$100 and went up to more than US$800 per seat.
Beijing is its neighbour's key diplomatic protector and trade partner, and after years in the deep freeze over the North's missile and nuclear tests their ties have warmed rapidly this year, with Kim visiting China three times to meet President Xi Jinping.