Deng was paraphrasing a well-known Chinese proverb. Context change in the Chinese foreign policy, and avoidance of conflict with the great powers (mostly the US, USSR collapsed soon after) . Before Deng Xiaoping , Chinese policy was to criticize the USA and the USSR on ideological grounds, and sometimes confront them directly (Korea, Vietnam, Sino-Soviet border skirmishes ...) . Deng, however, changed much of this. According to him, China should above everything strive to strengthen its economy and technological base, avoid conflicts unless Chinese direct interests are in danger (Taiwan above everything else) and stay mostly neutral and "invisible" in disputes not directly concerning it.
As a consequence of this, although a permanent member of the UN Security Council, China rarely used its veto power. It would usually not block resolutions and decisions pushed by the US and its allies. Instead, at most, China would abstain from voting and mildly express displeasure, calling for all sides to respect international law or issuing a similar blanket statement . Examples would be the US "humanitarian interventions" in Iraq, Yugoslavia, Libya, Afghanistan, Syria etc ...
This strategy worked pretty well - China had a few decades of uninterrupted growth, and was almost forgotten as a potential opponent by the West. Only in the last few years has the US realized that in many areas China did catch up and actually overtook them. Chinese foreign policy still remains relatively non-intrusive, but their true strength is now much harder to hide, so it is possible they will abandon Deng's tenets in near future.