三人行，必有我师(焉)

成语
明察秋毫 to observe even the smallest things, not to miss a thing
螳螂捕蝉黄雀在后 to pursue small gains while neglecting greater danger (lit. the mantis stalks the cicada unaware of the oriole behind)
千辛万苦 untold hardships, trials and tribulations (lit. a thousand pains and ten thousand sufferings)
( ”pinyin” )
...and that concludes all the chengyu from the Guardian script, although there are probably a few in there I missed. I'm quite pleased with myself for being able to group them by common characters for all but the last three days. Suggestions for what to address next, please?

词汇
其次, secondly; 其实, actually ( ”pinyin” )
https://mandarinbean.com/new-hsk-3-word-list/

Guardian:
夜尊大人，神武盖世，明察秋毫，仙福永享，寿与天齐, Lord Ye Zun, mighty and powerful, perspicacious, may you live in fortune and long life
我是故意放走了赵云澜，好让老板你螳螂捕蝉黄雀在后, I let Zhao Yunlan go on purpose, so as not to let you pursue small gains and neglect greater danger
你以为我千辛万苦地把他留到现在是为了什么, what did you think I went to such pains to keep him for?
其实我第一眼见你的时候，我就喜欢上你了, actually, the first time I laid eyes on you I fell in love with you.

Me:
你真的明察秋毫，我没发现那些小错误。
其实他还在这里。

Thank you for kind and useful comments yesterday! Replies/further discussion to follow, today a bit of a rush.

语法
Causatives 由 and 将 + "since" (I don't know why 自从 is in the same lesson)
https://mandarinbean.com/you2/
https://resources.allsetlearning.com/chinese/grammar/Using_%22jiang%22_as_a_formal_%22ba%22
https://resources.allsetlearning.com/chinese/grammar/Emphasizing_the_doer_of_an_action_with_%22you%22
https://resources.allsetlearning.com/chinese/grammar/Expressing_%22ever_since%22_with_%22zicong%22

词汇
落后, backward (pinyin in tags)
https://mandarinbean.com/new-hsk-3-word-list/

Guardian:
老板的任务一直都是由你负责, the boss' duties have been for you to handle all along
城东区树林将全部被砍伐, the forest in the eastern district will all be cut down
自从你当年离我而去，我就戴上了这个面具, I have worn this mask since you left me back then
[no 落后]

Me:
自从昨天我们在第四年中.
不要走得落后了，你肯定要摔倒了。

语法
Reduplication of measure words
https://mandarinbean.com/the-overlap-of-quantifiers-and-quantity/

词汇
后果, consequence; 后面, behind; 后年, the year after next; 背后, behind; 落后, backward; 前后, front and back/from start to finish ( ”pinyin” )
https://mandarinbean.com/new-hsk-3-word-list/

Guardian:
一个个五官都被抹去, all their faces were removed
但是花草树木年年生长, but flowers and trees grow year by year
后果不敢想象, I don't dare imagine the consequences

Me:
为了收集数据，我们要把所有的龙一条一条数。
你说后年，我觉得真的是猴年马月。

成语
一言为定 it’s a deal, done and done (lit. one word settles it)
鞍前马后 to follow someone everywhere, be at their beck and call (lit. before the saddle, after the horse)
以貌取人 to judge by appearances
( ”pinyin” )

词汇
按, press/push; 按照, according to (pinyin in tags)
https://mandarinbean.com/new-hsk-3-word-list/

Guardian：
你说的一言为定，what you said is a deal.
一 一个张丹妮混淆视听，一个地星人鞍前马后，配合还真是默契, one Zhang Danni muddying the waters, one Dixingren at her beck and call, what a pair.
我就知道你们这些人都是看脸的以貌取人, I know you people all just look at the face and judge by appearances.
按照他说的，烛九背后还有高人, according to what he said, there’s still someone higher up behind Zhu Jiu.

Me:
那双夫妇，他完全她鞍前马后。
按照这本书，不能这样写。

语法
Past event 1 + 后来 + past event 2 "X, afterward Y" (bottom of page)
https://resources.allsetlearning.com/chinese/grammar/Comparing_%22yihou%22_%22ranhou%22_%22houlai%22

词汇
鱼, fish (pinyin in tags)
https://mandarinbean.com/new-hsk-2-word-list/

Guardian:
所以就剩下我跟我弟弟两个人相依为命，后来实在活不下去了，我们就决定出去闯荡, so my brother and I were left to depend on each other. Afterward we couldn't survive there, so we decided to leave and go make our way in the world
你们在吃鱼吃肉的时候，怎么从来没有想过生活诚可贵呢？ when you eat fish or meat, why have you never thought of their lives as precious?
死猫，小鱼干炸好了, damn cat, the fried fish is ready

Me:
昨天我去超市，后来吃午饭了。
因为鱼肉有太多骨头，所以我不太喜欢吃。

语法
以后 + event "in the future, X" (middle of page)
https://resources.allsetlearning.com/chinese/grammar/Comparing_%22yihou%22_%22ranhou%22_%22houlai%22

词汇
有空(儿), have time/be free; 有人, (there's) someone; 有(一)点(儿), a little bit; 有意思, interesting; 所有, all ( pinyin )
https://mandarinbean.com/new-hsk-2-word-list/

Guardian:
以后我希望你能注意安全, I hope you'll be careful in the future
你以后就不用再害怕了, in the future you won't need to be afraid any more
沈巍？好名字。这是我的名片，咱们有空再聊, Shen Wei? A good name. Here's my card, let's talk more when we both have time.

Me:
以后你最好不太迟辣的。
我有一点累啊，今天睡觉得早吧。

语法
Event 1 + 之后 + Event 2 "X, and then Y" (bottom of page)
https://resources.allsetlearning.com/chinese/grammar/Comparing_%22yihou%22_and_%22zhihou%22

词汇
游客, tourist/visitor; 旅游, travel/tourism ( pinyin )
https://mandarinbean.com/new-hsk-2-word-list/

Guardian:
我当时听见尖叫声之后马上就看了过去, I heard a scream and then went to see right away
这件事情等我回来之后再说吧, after I get back let’s talk about this again.
[no 游 of this kind]

Me:
我想洗个澡，之后才会能放松。
这里因为游客太多所以我不喜欢。

语法
S (+V) + 以后/之后 + (S+) V "after X, Y" (top of page)
https://resources.allsetlearning.com/chinese/grammar/Comparing_%22yihou%22_and_%22zhihou%22

词汇
永远, forever (pinyin in tags)
https://mandarinbean.com/new-hsk-2-word-list/

Guardian:
我被解雇以后，恐怕再也没办法保护这个孩子了, after I was fired, I'm afraid I won't be able to protect the kid any more.
咱们就等天黑之后再出去吧, let's set off again after it gets dark
我永远也不会原谅你, I will never forgive you

Me:
洗衣服以后要把它放在吊干。
我会永远记得你的友善。

语法
千万 + 不要/别/不能 + V, "absolutely don't do X" (top of page)
https://resources.allsetlearning.com/chinese/grammar/Expressing_%22to_make_certain%22_with_%22qianwan%22

词汇
今后, from now on/in future (pinyin in tags)
https://mandarinbean.com/new-hsk-2-word-list/

Guardian:
你千万不要告诉沙雅, don't you dare tell Sha Ya
最后这句话，可千万不能被她看到, finally, whatever happens she mustn't see me.
[no sentence with 今后]

Me:
冰箱里的桃子你千万不要吃，我把它留在为晚饭吃。
今后好好小心这样的问题再也不出来。

语法
X 以后, "after X" (top of page)
https://resources.allsetlearning.com/chinese/grammar/Comparing_%22yihou%22_and_%22de_shihou%22
I suppose you could say this page refers to "actions done in the time after X happens," with the difference being whether you use "in the time after" (的时候) or just "after" (以后)?

词汇
观点, viewpoint; 参观, visit ( pinyin )
https://mandarinbean.com/new-hsk-2-word-list/

Guardian:
我走了以后，一定请你善待这孩子, after I leave, I beg you to take good care of this child
有什么事情跟我回去以后再说吧, let's talk about what's going on after you return with me.
看来赵处长有眉目了，要不然哪有时间到我们学校来参观? Apparently you've found a lead; otherwise, how would you have time to visit our school?

Me:
他醒来了以后，我跟他确认再联系你吧。
每个人有自己的观点。