Military jargon is most often fascinating. 'Salami slicing' is a series of many small actions, often clandestine ones, that as a cumulative whole, produce a much larger result that would be difficult or unlawful to perform or achieve all at once.
The Chinese Communist Party government in Beijing seems to be proficient at this expansionist stratagem. Since World War II, while most sovereign nations have shown respect for international borders, the CCP has been gradually expanding its territories, both on land and at sea. At times undetected and often unchallenged, China has captured, annexed, or claimed vast territories in small increments.