"The Chinese influx into Asian Russia"

We've looked at these demographics a couple times. From last year's "Siberia As Breadbasket For China" here is the map the way the Chinese think it should be drawn:

China has been eyeing their neighbor to the north based on some revanchist claims to the land for 160 years.
Here is part of the Chinese pitch from a few years ago as verbalized by the New York Times:

...The border, all 2,738 miles of it, is the legacy of the Convention of Peking of 1860 and other unequal pacts between a strong, expanding Russia and a weakened China after the Second Opium War. (Other European powers similarly encroached upon China, but from the south. Hence the former British foothold in Hong Kong, for example.)

The 1.35 billion Chinese people south of the border outnumber Russia’s 144 million almost 10 to 1. The discrepancy is even starker for Siberia on its own, home to barely 38 million people, and especially the border area, where only 6 million Russians face over 90 million Chinese. With intermarriage, trade and investment across that border, Siberians have realized that, for better or for worse, Beijing is a lot closer than Moscow....

—via "Why China will 'reclaim' Siberia", China Daily Mail, July 5, 2014

The new map is envisioned to look something like this:

Expanded China-Siberia map showing possible claims China might make

In the meantime China is leasing. From the South China Morning Post, December 18. 2018:

Russia offers 2.5 million acres of land to Chinese farmers, but will it ease Beijing’s soybean shortage?

And although the SCMP's editorial stance usually seems to be pretty much independent of the official Beijing line, the fact the paper is owned by Alibaba means the potential for government pressure should always be factored into stories such as this from the July 20, 2018 edition:

Why forecasts of a Chinese takeover of the Russian Far East are just dramatic myth

With all that as prologue....
From the Asia Times, June 13:
China’s rising economic clout in Siberia and the Russian Far East is fueling ancient local dreads

On the global geopolitical stage, Russian President Vladimir Putin and Chinese President Xi Jinping are best buddies, united by shared interests and personal bonhomie.

But in Russia’s east, there is suspicion toward a capital that is far closer than distant Moscow.
Resentment toward Chinese tourists – who appear in huge numbers, often lack social graces and tend to patronize Chinese, rather than local businesses – is not unique to Russia. Nor is fear of China’s ever-growing economic clout.

However, in the vast, underpopulated reaches of Siberia and the Russian Far East, these factors are exacerbated by an age-old fear: That of being demographically and economically swamped by the giant next door.

The Baikal bottling battle
In Siberia, a China-funded water bottling project has sparked a major local backlash. The plant is sited in the village of Kultuk, on the southern shore of Baikal, the world’s deepest lake. Baikal holds one-fifth of earth’s fresh water and boasts UNESCO World Heritage status.

Construction on the 1.5 billion-ruble (US$22.7 million) factory started in January. A contract to supply 190 million liters of water per year to the thirsty Chinese market from 2012 has already been signed with the project’s Chinese investor.

But last month, a petition demanding the removal of the plant collected almost one million signatures. Baikal water “will be shipped to China,” the petition says, while the facility blocks local access to the lake. As a result, a Russian court has ordered building work to be stopped until complaints can be investigated.

Prominent Siberian environmentalist Alexander Kolotov agreed there are some issues with the plant’s location, but said the “anti-China factor is very clear” in the protest. It reflects “fears and prejudices of modern Russians that ‘China will gulp down our national heritage,'” he said.

“For Siberians, there are two things that are like a red rag to a bull,” Svetlana Pavlova, chief editor of the Irkutsk, a Siberia-based IRK.ru news website, said. “One is the Chinese who ‘have taken over everything and leave trash everywhere,’ and the second is their presence on the lake. Here, we have a company building a plant that is 99%-owned by Chinese nationals!”....MUCH MORE

If interested see also:
Residents Of Russian Far East Protest Chinese Presence

"Behind China and Russia's 'Special Relationship'"
Barron's Cover: China's Military Buildup
"Russia Ships First Yamal LNG Cargoes to China Via Northern Sea Route"
Big, Big Money: The 'Power of Siberia’ gas pipeline to China could be global game changer