ㅊ
치읓 (chieut)
ch with a strong puff of air, as in “church.”
StrokesA short dash on top first, then the ㅈ underneath.
Easy to confuseㅈ — Without the top dash it's ㅈ, a softer sound.
Examples
친구
chingu
friend
책
chaek
book
차
cha
tea; car
Korean life dictionary
22 short guides to words and manners