Answered by Simon
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                                    Sep. 07, 2021 20:16
                                
                                
                                Bro depends on what era in the Paleolithic.
If we are looking genetically Ydna NO and Ydna P (R and Q ancestor) were present in China. 
At first sign language and clicks would be spoken in the beginning. 
Later you’d most likely encounter Proto-East Asian. Considering that Tianyuan Man of Bejing left descendants among Yeniseian, Native Americans and Proto-Indo-European speakers; Yamna Culture; and not Modern Chinese populations. Perhaps Tianyuan Man spoke a proto-proto language of one of those 3 major languages.