Mr Wang's comments come as the U.S. voices increasing concern at North Korea's development of nuclear weapons and deploys a Navy carrier group off the Korean peninsula.
There is also intense speculation that North Korea could carry out a sixth nuclear bomb test or another missile launch - possibly a long-range missile - on Saturday. Since a year ago, following North Korean claims that it could hit USA targets with its missiles, some US military officers have begun to prepare for the day when that could become a reality.
Live coverage of the spectacle by North Korea's official broadcaster, monitored in Beijing, showed leader Kim Jong Un, wearing a Western-style suit and tie, in attendance at the scene.
Trump's tweets and his conversations with Chinese President Xi Jinping seem created to push Beijing to crack down on North Korea, and there have been some indications that China is getting tougher on its errant neighbor.
Unlike his predecessors, President Donald Trump has taken a hard line with North Korea, going as far as to hint at a pre-emptive strike if North Korea continues to press ahead with its nuclear weapons program.
"Trump is always making provocations with his aggressive words", Han Song Ryol said. Amid rising regional tensions, Pyongyang residents have been preparing for North Korea's most important. Also on display was a powerful midrange missile that outside analysts call a "Musudan", and which can potentially reach USA air bases in Guam, as well as a new solid-fuel midrange missile that can be fired from land mobile launchers, making them harder to detect before launch.
Monday, hundreds of members of the Korean People's Army (KPA) crowded the plaza of the Kumsusan Palace of the Sun in Pyongyang to pay tribute to past leaders and vow loyalty to Kim Jong Un, according to state media Rodong Sinmun.
North Korea may conduct another nuclear test this weekend.
Japan PM: North Korea May Be Capable Of Sarin-Loaded Missiles
Tensions in the pacific are rising, as North Korea continues to flex its military muscle with missile launches. Japan has taken a few steps this week to reassure the public about its effort to protect the public.
South Korean analysts have said that the North might use the parade to showcase its strategic weapons, such as prototype intercontinental ballistic missiles.
Choe Ryong Hae, who some say is the second-most powerful official in North Korea, said in a speech that the country is ready to stand up to any threat posed by the United States. In a moment we'll hear more about North Korea's weapons capabilities.
The annual U.S. -South Korea military exercises have consistently infuriated the North, which views them as rehearsals for an invasion.
The data released on Thursday showed that China's trade with North Korea grew 37.4 percent in the first quarter of this year from the period in 2016.
North Korea vowed a "merciless" response to any United States provocation. Whatever comes from the USA, we will cope with it.
The North has said it has developed and would launch a missile that can strike the mainland United States but officials and experts believe it is some time away from mastering all the necessary technology.
Lately, the United States has stated on many occasions that all possible options to deal with North Korea are under consideration.
For North Koreans, April 15 is an auspicious date that sees millions celebrate the birth of the nation's founder. Yesterday, the US dropped one of the largest non-nuclear bombs in the American arsenal on ISIS forces in Afghanistan. Additional negotiations (the Six-Party Talks) won some concessions from North Korea but ultimately failed in getting the country to totally give up its nuclear program.