The father buys,the son bigs,the grandchild sells,and his son thigs.
父买、子修建、孙儿卖,重孙街上当乞丐。
From this we get the expression to make a beeline for someone or something, which means to go quickly along a straight direct course for someone or something.
从这里我们得到一条短语"to make a beeline for someone or something,意思是迅速地沿着一条直线向某人或某物走去。