China bitterly attacked the Soviet Union and the United States yesterday, predicting that the two superpowers would eventually go to war.

In an unexpectedly fierce attack on both Washington and Moscow at the U.N. special session on disarmament, Chinese foreign Minister Huang Hua said the Soviets were the "more aggressive of the two powers."

The speech came on the heels of a visit to Peking by U.S. national security adviser Zbigniew Brzezinski, who reportedly stressed in his talks with chinese leaders that China and the United States have a common interest in opposing the Soviet Union.

Brzezinski also sharply criticized the Soviet Union Sunday for aggresive activities in Africa and other parts of the world.

[A State Department spokeman said in Washington he would have no immediate comment, saying officials would want to take a closer look at Huang's speech. U.S. officals said there appeared to be little change from positions China has taken in the past on the Soviet Union and the United States.]

Clearly referring to the Soviet Union Huang said, "one superpower is bent on expansion.

"The other" - the United States - "has its vested interests to protect. As the struggle intensifies, they are bound to fight it out some day."

Huang added that the Soviet Union is "the most dangerous source of a new war and is sure to be its chief instigator."

The Chinese foreign minister also hinted that China might change its policy of boycotting international disarmament conferences. He said the U.N. disarmament meeting should decide on "the items and procedures of disarmament negotiations" which should be "truly free of superpower control."

A U.S. disarmament official interpreted Huang's statement as "a hopeful sign that the Chinese now want to get back in on arms negotiations." In the past China has not participated in the 31-nation Geneva disarmament conference or other such meetings.

Huang said Moscow engages in "hollow talk" about disarmament while rapidly expanding its armaments in a global attempt to "weaken and squeeze out" the influence of the United States.Huang said some people in the West, faced with expanding Soviet influence, are pursuing policies of appeasement and indulging in "a false sense of security."

Of the U.S.-Soviet strategic arms talks, Huang said, "In the eight years of SALT, the Soviet Union has bought its once backward nuclear arsenal up to a par with that of other superpower. How can this be described as an effort to limit the nuclear arms race?"

"When major progess has been made in the destruction of Soviet and U.S. nuclear weapons and in the reduction of their conventional weapons, the other nuclear countries should join the Soviet Union and the United States in destroying all nuclear weapons," Huang said.

As for China, Huang said, "We cannot but strengthen our preparedness against war . . . How can we afford to relax and go to sleep when a superpower has deployed a million troops along our borders?"

He said the Soviet Union had positioned its conventional military forces for a surprise attack on Western Europe, and added: "It is thus unrealistic to assume that nuclear disarmament alone will lessen the danger of a world war, and it is even more so to believe that it will prevent local wars."