How many days will the express delivery from Ningbo to Harbin arrive?

Express delivery usually arrives within 3 days. If the distance is really far or remote, it will take about 4 or 5 days.

From Ningbo to Harbin, it will arrive within 4 days under normal circumstances. Of course, there are many express delivery companies now, some are express delivery in express delivery and some are "slow delivery" in express delivery. Anyway, it usually won't take more than a week, otherwise it won't be a courier.