这个 	zhège 	this (one)
要 	yào 	to want
不要 	bùyào 	not to want
谢谢 	xièxie 	thank you
很 	hěn 	very
便宜 	piányi 	cheap
真的 	zhēnde 	really
贵 	guı̀ 	expensive
买 	mǎi 	to buy
卖 	mài 	to sell
质量 	zhı̀liàng 	quality
退换 	tuı̀huàn 	exchange a purchase