The Chi system is quite easy.
Long story short getting 300 in the first and 2nd Chi animals can be done with the initial 4k Chi points. It's important to unlock any Chi you can before focusing on getting preciselly what your class needs.
To do this first unlock the Dragon chi, that's free. After that you need to Study. You will have 4 attributes, randomly generated. In order to get 300 points in 4 attributes you need to get attributes of close to (and over) 75 chi points. These are generally green. If you have found an attribute over 75 (or close to it, 72 is pretty ok too) you need to LOCK IT. Locking an attribute means you will not lose it when you study again. Note that locking an attribute makes it more costly to study. After you locked your first attribute Study again and repeat. When you get 300 points you should have already locked 3 of them (that's the max). When you get 300 leave the dragon and open the Phoenix. If you are lvl 110+ 2nd rb continue on to open Tiger and Turtle. If not, start making attributes that are usefull to you. Study until you get attributes you like, like HP, Damage, Break and so on. When you have found something worth keeping it lock it
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I agree that the Chi system is bulkers oriented, you can tell by the prices needed to refill (1k cps for 4k points). As an example the top fire tao of my server who is now no.1 in Chi can 2 shot kill our server's king, a 385 BP trojan. She also has 40k HP.
Nevertheless, understanding the system and by simply being a bit lucky you can get awesome attributes. I am 2nd in Dragon Chi on my Server and it's all due to the initial 4k chi, haven't spent anything other than that.
PS: You get 500 chi points everyday for free but you can only have 4k at most - use them or lose them.