走親戚
call on (or visit)relatives
閣下到中國來是～來了。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./我們兩黨、兩國要像～一樣，加強(qiáng)來往，互通情況，交換意見。Our two Parties and two countries are like relatives who often visit each other to exchange views and opinions.