Dear Dr./ Mr./Ms. [编辑姓名],
I have submitted my manuscript titled [论文题目] to your journal on January 10, 2017 and the status has remained "Editor assigned" since then. Since it has been two months since my submission, I was wondering if the status is not getting updated due to a techincal error. It would be great if you could let me know when I can expect the next status change.