走亲戚

call on (or visit)relatives
阁下到中国来是～来了。Your Excellency’s visit to China is a meeting of relatives,so to speak.or:Your Excellency has come to China to visit relatives,so to speak./我们两党、两国要像～一样，加强来往，互通情况，交换意见。Our two Parties and two countries are like relatives who often visit each other to exchange views and opinions.