Friend, the placing of military bases does not address the Marxist meaning of imperialism. Summary of Lenin’s definition of imperialism here and two brief quotes:

Imperialism, or the domination of finance capital, is that highest stage of capitalism in which this separation [money capital & productive capital] reaches vast proportions. The supremacy of finance capital over all other forms of capital means the predominance of the rentier and of the financial oligarchy; it means that a small number of financially “powerful” states stand out among all the rest. The extent to which this process is going on may be judged from the statistics on emissions, i.e., the issue of all kinds of securities. (Lenin, Imperialism: The Highest Stage of Capitalism, p. 238-9)

To Lenin, imperialism is the dominance of finance capital. Specifically, he does not define imperialism as it is generally defined, namely, the building of empires by subjugation of territories [with military bases] and the exploitation of these colonial territories for new materials and as markets. (The Essential Lenin, introductory text to Imperialism: The Highest Stage of Capitalism)

Everyone should pick up any book by Xi Jinping: (1), (2), (3), (4), (5). And when one sees how evasive he is, probably within a chapter or two, I recommend The Great Leap Backward (1978) (ML analysis) or Is China An Imperialist Country? (2014) which is by a Maoist group but has more updated sources. Also notice how tertiary the evidence is (Pelosi failing to meet an African delegation) in the video linked below. What sort of evidence is all of this? Does it qualify as historical-materialist analysis without further context? No.