By the way, the Russians ice breaker also managed the same.

You wonder what it really means that both the entrapped Russian and Chinese icebreakers did what was apparently impossible for them to do.
Once they were dead stuck and entrapped by the ice.
Then, once it was known that a U.S. icebreaker was coming to their rescue - they do the impossible.
They freed themselves of the ice.

They denied the U.S. the chance to rescue them.

There is the unfortunate smell of unfriendliness here.
You can smell it, can't you?