因为维护家族故地，还有一些其他的原因，范家在越国并未有任何的商业发展。这个皇孙的爹是个亲王，权利大的很，可威风了。这一日心情几起几落，令他疲惫不堪。Finally, look at the method of the event.Analysis: Since JS can represent an integer range of-2 53 ~ 2 53, the a here has exceeded 2 53, similar to question 6, the maximum value plus a number is still the maximum value. So it's still aRole, record the internal status at the current time, be responsible for creating memos and restoring the internal status with memos.
