unilateral / one-sided / home remedy / folk prescription(same as 丹方) / single-drug prescription (same as 奇方[ji1 fang1], one of the seven kinds of prescriptions of Chinese medicine 七方[qi1 fang1]) / metaphorically. a good solution
(fig.) to fight a one-sided battle / to have an unfair advantage in a contest
剃头挑子一头热
tì tóu tiāo zi yī tóu rè
lit. only one end of the barber's pole is hot (idiom) / fig. one-sided enthusiasm / one party is interested, but the other, not so much / (Note: In former days, street barbers carried their equipment on a pole, with tools and a stool at one end and a brazier at the other.)