This body refers to oneself, not others. Proceed from your own heart, do what you should and can, and don't give it to others, let alone pass the buck. I am only concerned with myself, others are others.
At this time, it refers to the present moment, not the past or the future. The future can be expected, but it is far away, and the only way to a better future is to do well in the present. The past has passed, we can't chase it, regret is useless, and excessive reflection is even more harmful. So what you can do, what you can do, what you know and what you can do at this moment are the most important.
Here, it refers to the situation, neither good nor bad. Under the present conditions, make a choice, make a decision, and then do things in a down-to-earth manner. You can't blame others, sigh that you are ill-fated and unlucky, and you can't take chances and expect Hong to turn around. Only by doing what we can in this situation can we change our country.
I thought it was exquisite, so I wrote it down.