孱

learning, knowledge, science

character, letter, symbol, word

son, child

a quarter-year, a season

to exist

grandchild, descendent

opening, hole, orifice

filial piety, obedience

to take part in, to intervene

miserable, wretched

to injure, to ruin, to spoil

to eat, to dine

to mix, to blend, to adulterate

vivid, illuminating, brilliant

silkworm

bright, radiant