Chinese icebreaking research vessel Xue Long (Snow Dragon), Photo by Bahnfrend
Reuters has an interesting short article about China’s interest in the Arctic. Initially this will probably be primarily concerned with shipment of Russian LNG, but it appears we can expect other activities as well, including fishing. Certainly we should expect more traffic through the Bering Strait, bringing with it the possibility of SAR and Marine Environment Protection incidents.
“The white paper said China also eyes development of oil, gas, mineral resources and other non-fossil energies, fishing and tourism in the region. It said it would do so “jointly with Arctic States, while respecting traditions and cultures of the Arctic residents including the indigenous peoples and conserving natural environment”. “
Chuck Hill's CG Blog 
Incidentally China does apparently have a requirement for some domestic icebreaking. https://www.marinelink.com/news/shipping-northern-disrupt433353
First Chinese Polar cruise ship under construction. http://gcaptain.com/china-building-arctic-cruise-ship-for-polar-silk-road/
I hope they don’t plan taking it deep into the ice pack with that hull geometry and low ice class…
Comparison and contrast of US and China’s strategy (or lack there of) for the Arctic.
https://www.realcleardefense.com/articles/2018/04/27/grand_strategy_all_along_the_polar_silk_road_113378.html
Interesting article outlining China’s growing interest in both the Arctic and the Antarctic. “China’s Polar Strategy: An Emerging Gray Zone?”
https://thediplomat.com/2018/07/chinas-polar-strategy-an-emerging-gray-zone/