Jin continued to monitor the various groups going through the Nian Event. Many of them appeared to be like the Pandawans, stuck with their current side questline, which turned out to be more challenging than they had expected.
Some of the Pandaren groups had decided to ignore the side quest line upon seeing some non-spoiler reviews telling them it was optional, so they had searched for the Nian to fight against it. It was not incredibly hard to find the Boss, yet the battle was overwhelming because it was meant to be handled after doing the side quests to weaken it.
Once defeated, those groups diligently started the side quests and they would have discovered that if they were to come back, the Nian Boss would wait for them in the same state before their defeat. This meant that its hit points did not recover and thus allow them to wear it down bit by bit if they chose the brute route again even though it would cost them.