Did they fight for control over territory? Did they cooperate against other groups in the region? Did they trade with each other? Were there significant numbers of immigrants from either country? We're there notable cultural influences or technological exchanges between them? Did Russia have more knowledge of China than Western European countries at the time?
In the 1640s Russian explorers pushed into the Amur basin which the Qing dynasty considered a vital interest due to its close proximate to the Manchu homeland. An exiled Pole manage to take control of a chunk of the region and swore fealty to the Russian Tsar. The Qing was initially distracted by the conquest of China but in the 1680s decided to drive the Russians out of the area. The Qing army defeated the Russian one in a small war and the Treaty of Nerchinsk swas signed which fixed the borders between the two states.
Tensions rose between the two states again due to the boundaries between Qing ruled Mongolia and Russia, and emperor Kangxi pressed the Russians for a resolution. Peter the Great decided to settle the issue in a new treaty.
In 1727 the two states signed the Treaty of Kyakhta, which affirmed both side's commitment to peace and gave Russians preferential commercial access to Chinese markets. Russia also agreed to help the Qing with the conquest and occupation of Xinjiang.
Of note in those treaties is the fact that the Qing dynasty seems to have recognized Russia as an equal and did not require that they enter into tributary relations, and acknowledged the sovereignty of both countries.