First of all, we must understand that Wu Dong is not a person, but a country or an interest group. When Wu Dong was destroyed by the Western Jin Dynasty, Wu Dong, an interest group, was completely eradicated or disintegrated by the Western Jin Dynasty. If you really compare it to a person, then when Wu Dong was destroyed by the Western Jin Dynasty, Wu Dong was already dead.
In fact, the reason why Soochow can't be restored has already been said in the Romance of the Three Kingdoms.
Before the Romance of the Three Kingdoms in Battle of Red Cliffs, Cao Cao's 800,000-strong army went south, Jingzhou surrendered and arrived at the Yangtze River. At this time, Sun Quan hesitated under the situation of war and peace. At this time, Lu Su came to persuade Sun Quan, which probably meant that everyone could surrender, but only Sun Quan could not. Officials do everything else. Only Sun Quan's surrender will come to no good end.
In fact, this truth is the same in the restoration of Soochow. As mentioned above, with the demise of Soochow in the Western Jin Dynasty, the interest groups to which Soochow belongs have been completely dispersed or reorganized, forming new interest groups.
So who will recover Soochow after the demise of the Western Jin Dynasty? In fact, it is likely that the royal family of Soochow, that is, Sun Shi, really wants to recover Soochow. However, after the country was destroyed, the killing and control of the royal family were always the strictest, and Sun Shi had absolutely no power in Dongwu.
As for the original vested interests of Dongwu, they were either destroyed and suppressed with the collapse of Dongwu, or surrendered to the new Western Jin Dynasty and became part of the Western Jin interest group.
At this time, the Western Jin Dynasty was destroyed, so why should we recover Soochow? For the real strength faction in the south, the recovery of Dongwu will gain a position of controlling power from Minister Long at most, but internal conflicts and contradictions are inevitable, and there is a risk of failure, so it needs to be reshuffled. Moreover, there was chaos in the north and civil strife in the south. I'm afraid if Soochow is not recovered, the country will be gone.
At this time, assisting the Jin Dynasty to establish the Eastern Jin Dynasty, for the strength faction in the south, they can also control power without risk, so how to choose is self-evident, just like Lu Su advised Sun Quan at the beginning. Anyway, it's not a part-time job to work for anyone, and where is the power minister? What's the advantage of trying to recover Soochow? If you can really do it, you might as well be the emperor yourself and take the state of Jin instead.
How to choose is not difficult to understand.