Shen Xinyue used the ice sword as well as the ice goddess ring to fight against Mai Shina.
On the other hand, Qing Xue used the ice goddess shawl which was extremely powerful and could freeze things just by touching them.
Here Shen Xinyue fought at close range, while Qing Xue was at medium range.
Although they had never fought together, their combination was so good, they were able to withstand Mai Shina's sword.
They were also able to put up such strong resistance that it made Mai Shina a little overwhelmed.
"She is not that strong" Shen Xinyue felt that Mai Shina was not that strong.
"Don't underestimate her" Qing Xue said to Shen Xinyue, she told Shen Xinyue not to underestimate the enemy, if she underestimated the enemy, she would regret it, that's why Qing Xue told Shen Xinyue to never underestimate Mai Shina.
The exchange they had was amazing, they cut down mountains, split the land and swept across the sky.