feel comfortable since it is challenging and there are a lot unknowns. Basically a technical person is shifting to a management role, but you are not ready for it as a full-time job.
You are ahead of most of us from management perspective, but here are my thoughts which might be helpful.
1) 而是让我学作effective manager（那就是我不够effective喽）
Yes and No. The resources are limited now, your manager is stressed and need some help. You are the person s/he can rely on, so it would be better if you could do that.
2)在家工作离公司远很难知道上层的动态。都不知道这是不是要裁我啊
Relax. There is nothing you can do about it. The ax can hit anybody in the company. You are one of the most valuable persons, at least from your manager's perspective, so you are safe IMO.
3) 如果不让我做具体的我怎么样才能熟悉和开展工作？
Good question! I have some thoughts, but ask yourself how? If you couldn't answer, is there anybody else you can ask for help? I think there is one who is better than anyone who is reading the post here.
4) 还有一个曾有个3人团队 ... 我是个爱干也享受干具体活的人。改组后这两周天天忙，忙到真的没时间干具体活。面对今年还要再裁几次，我想找下家的心都有了
Do you feel comfortable to be a developer and managed by the guy who 曾有个3人团队?
5) 所以要换就是公司内部投简历找。然而我真要找的话有面试就得通知老板。
Understood. This is a tricky one. If it is required to notify your manager before applying the internal job, it is hard. But you should be able to talk to the other team first and have a sense of feeling how likely you are going to be hired. Lunch together and so on.
6) 依我对他的了解，走不成的话绝对没好果子
Well if you decide to move on, "走不成" is not possible. You just need to prepare for the transition period. You have more advantage since you are firing your boss/company instead of the other way around. As such, there is nothing to be afraid of.
If you have concern regarding the reference from your boss, that is redundant. You don't need to put your boss as your reference. As you can see the laid off and re-org can be done multiple times, you manager can be changed and so on so forth. Who cares! Put somebody else who can say something good about you, that is all.
You are ahead of most of us from management perspective, but here are my thoughts which might be helpful.
1) 而是让我学作effective manager（那就是我不够effective喽）
Yes and No. The resources are limited now, your manager is stressed and need some help. You are the person s/he can rely on, so it would be better if you could do that.
2)在家工作离公司远很难知道上层的动态。都不知道这是不是要裁我啊
Relax. There is nothing you can do about it. The ax can hit anybody in the company. You are one of the most valuable persons, at least from your manager's perspective, so you are safe IMO.
3) 如果不让我做具体的我怎么样才能熟悉和开展工作？
Good question! I have some thoughts, but ask yourself how? If you couldn't answer, is there anybody else you can ask for help? I think there is one who is better than anyone who is reading the post here.
4) 还有一个曾有个3人团队 ... 我是个爱干也享受干具体活的人。改组后这两周天天忙，忙到真的没时间干具体活。面对今年还要再裁几次，我想找下家的心都有了
Do you feel comfortable to be a developer and managed by the guy who 曾有个3人团队?
5) 所以要换就是公司内部投简历找。然而我真要找的话有面试就得通知老板。
Understood. This is a tricky one. If it is required to notify your manager before applying the internal job, it is hard. But you should be able to talk to the other team first and have a sense of feeling how likely you are going to be hired. Lunch together and so on.
6) 依我对他的了解，走不成的话绝对没好果子
Well if you decide to move on, "走不成" is not possible. You just need to prepare for the transition period. You have more advantage since you are firing your boss/company instead of the other way around. As such, there is nothing to be afraid of.
If you have concern regarding the reference from your boss, that is redundant. You don't need to put your boss as your reference. As you can see the laid off and re-org can be done multiple times, you manager can be changed and so on so forth. Who cares! Put somebody else who can say something good about you, that is all.
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