China opposes the THAAD deployment because it could undermine its own ballistic missile capabilities and says the US must bear the consequences of its deployment.
Wang likened the US and North Korea to trains at risk of collision.
China is seeking to revive talks as Kim Jong Un's push for more powerful nuclear weapons prompts the U.S.to set up a missile-defense system known as Thaad in South Korea. Developed by the U.S. Army, THAAD is created to intercept incoming ballistic missile warheads at high altitude. "Three of them landed in our country's Exclusive Economic Zone".
South Korea's acting President Hwang Kyo Ahn has condemned the launches as a direct challenge to the worldwide community and said Seoul would swiftly deploy a United States anti-missile defence system despite angry objections from China.
Prime Minister Shinzo Abe said Monday's launches show that North Korea has become "a new kind of threat".
Seoul and Washington have stepped up their efforts to bring the system here as quickly as possible due to evolving nuclear and missile threats from North Korea, military authorities said.
The cautionary remarks follow a significant rise in tensions after North Korea fired four banned ballistic missiles into Japanese waters on Monday.
The measures include the planned deployment to South Korea of a missile defense system called Thaad, which has infuriated China, the North's key diplomatic ally and crucial to efforts to persuade it to change its ways.
WikiLeaks reveals secret Central Intelligence Agency tools used to hack phones, TVs
The CIA also "runs a very substantial effort to infect and control" Microsoft Windows users with its malware, WikiLeaks said . Popular encrypted messaging apps like WhatsApp, Signal, Telegram and Confide would be rendered useless by such an attack.
The latest flare-up in tension began with the start of annual U.S. Experts say It is unprecedented for North Korea to fire four missiles at the same time.
The US military said it detected and tracked what it assessed was a North Korean missile launch, but added the launch did not pose a threat to North America.
Officials in Seoul said that launch was aimed at "testing the response from the new US administration" of President Donald Trump, who took office on January 20.
The UN body regretted that North Korea was diverting resources to the pursuit of ballistic missiles when its people "have great unmet needs".
China has called on the US and Japan to show great care, as the technology has some experts saying that it will break the global strategic balance and trigger an arms race.
The United States and South Korea have been planning for months to deploy THAAD to the Korean peninsula to protect against North Korean missiles, but have been hung up over basing issues.
The US and Japan have called for the United Nations Security Council to meet over the launches, which is expected to take place on Wednesday.