Originally, the character is a picture of a bag tied at both ends. However, we can also view the character as the sun 日 hiding behind a tree 木. Accordingly, there is a story that says that when one man looked eastward to find a character for "east", he saw the sun rising behind a big tree. Hence the character for "east" was created.
The character represents a person with a young plant 屮 sprouting from him which represents growth and maturity. Like all things in nature, it takes time for a person to grow and mature. Hence, let us respect those who came first before us, those who have already grown that "young plant" 屮 they've worked hard for.
Originally, the character showed the presence 今 of four gold nuggets hidden in the earth 土, but now two gold nuggets remain. Maybe the two missing gold nuggets were stolen by thieves.
When the character is used as a Korean surname, 김 is used.
In today's modern society, there is what we call a lively 生 currency 円 called the blue 靑 currency. The blue currency allows anyone to send and receive money electronically using bluetooth technology. It was coined "blue currency" because the money passes through the blue sky.
Lively 生 + currency 円 = blue 靑.
The character represents a bluish/greenish colour, and by extension suggesting youth/liveliness.
This is a pictophonetic character. Tree 木 suggests the meaning, while 交[교] suggests the sound.
交 means to intersect, exchange, or communicate. Meanwhile, schools were usually found in the woods 木 or somewhere solemn convenient for studying. Hence, people communicating and exchanging ideas 交 in the woods 木 came to represent "school".
至 is the picture of a bird flying down to earth and reaching for it. Once the bird arrives, it rests inside a place with a roof 宀 like a room, house, or some chamber.
Originally, the character is a picture of a scorpion 禺 in the grass 艹. Now it means ten thousand or innumerable. Anyhow, to see ten thousand or innumerable scorpions would sure be scary.
Two separate lines meaning "to divide". Eight is a single-digit number which can be divided by two twice. Incidentally, the Hindu-Arabic numeral for eight 8 shows symmetry, both vertically and horizontally.
If this character is used as part of other characters, it can indeed mean "to divide" instead of meaning "eight".
It also means all sides or all directions since there are 8 major directions in the compass : North, East, West, South, North-East, North-West, South-East, South-West.
When this character is used as part of another character, it can take on the form of 丷.