No it is not the same. China is not only investing their, but it is contributing in their infrastructure, building ports to dock ships and submarines, supplying arms and ammunition. And China has also deployed its army at Pakistan occupied Kashmir.
Yes. The Chinese investment involves improving the local infrastructure, such as ports and highways. Why this is surprising? And compared to Russia and the United States, China is still an infant in the arms export market. Only third world countries such as Pakistan and Sri Lanka purchase the low-quality Chinese weapons, because they can't afford any Russian or European weapons.