Why would China care, Russia has always been indian supporter and friend, and if Pakistan sells weapons to the US and NATO which are transferred to Ukraine no big deal, also Pakistan and Ukraine historically have had a good relationship, also Pakistan and Russia have gotten closer over the years, but a number or arms deals have been scuppered by the Indians, so there you go.
And lastly I would not trust on face value American media, they have an agenda and everyone on this forum knows what it is, Russia has agreed to sell commodities and oil at discounted rates.....Read into that what you may.