请教第九关，两张图都看到了，还是不知道答案。多谢
个人认为这是最难的一关，没提示根本过不了
<!-- After that, you will notice the third color which lead you to the key. Thus, read the hidden message -->
more hints:
1. what is the third color?
2. how to find the key with the third color? (consider the name of this level, 9balls, go back and find the KEY)
3. how to read the hidden message using that KEY? (how to locate sth in a table)
more hints:
1. what is the third color?
2. how to find the key with the third color? (consider the name of this level, 9balls, go back and find the KEY)
3. how to read the hidden message using that KEY? (how to locate sth in a table)
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