Why did China resist developing Better relations with the United States

The People's Republic of China was allied with the Soviet Union

Explanation: China refused to develop better relations with the United States because of the Soviet Union's framed influence on its president, the nationalist Chiang Kai-Shek, who, despite not having a confrontation with the United States, manipulated everything in his favor, making it appear that Relationships were stable with this country, however it took advantage of both the United States and the Soviet Union of whom he had strong influence.

However, Chiang was not inclined in favor of either of these two countries, only in their interests were the massive economic support expressed by both nations. To the previous thing it is also necessary to add to him that this dictator was not in agreement with the American ideology to consider it contrary to his.

Corroborating the above, the relations between both countries through history have been stable but with some periods of tension.