No, it does not appear to maintain such a revanchist claim.
The Chinese and Soviets skirmished over some of this same territory back in the late 1960s, but my understanding today is that most of the substantive territorial disagreements are resolved. The parties signed a 1991 agreement (see scholarly discussion here) that wrapped up a lot of the disagreements, including the Amur River region. This also corrected for the 1850s treaty-based border changes that China argued disproportionately favored Russia.
Although the two countries have had subsequent border adjustments (see, e.g., 2008 transfer of some islands), I do not believe China still maintains any substantial territory claims against Russia. It does still have claims against other nations, such as Taiwan, Japan, Philippines, India, etc. (see here for a Wikipedia listing of territorial claims).