This is the tracking result for CH001670948US:
2016-10-08 14:53 --Xi Xiang branch is being posted
2016-10-08 14:12 --Branch, xixiang, try to deliver
2016-10-07 20:14 -- Xi Xiang branch is being posted
2016-10-07 20:12 -- Branch, xixiang, try to deliver
2016-10-07 20:03 -- Branch, xixiang, try to deliver
2016-10-07 19:48 -- Branch, xixiang, try to deliver
2016-10-07 19:48 -- XiXiang branch is being posted
2016-10-07 16:18 -- XiXiang branch, arrived at post
2016-10-07 12:10 -- The Shenzhen Exchange Bureau, import each other (internal transit)
2016-10-07 09:24 -- The Shenzhen Exchange Bureau, import opening
2016-10-05 03:05 -- Guangzhou Exchange Bureau, import each other (internal transit)
2016-10-04 23:03 -- Exchange Bureau in Guangzhou, has imported opening
2016-10-01 23:30 -- In Chicago, has been exported
2016-10-01 10:19 -- United States Chicago, arrived at Exchange Bureau
2016-09-28 17:12 -- United States, has received send

It has been arrived and the courier tried to deliver it but seems to be failed. You'd better contact 11185 (press 8 for English service) as soon as possible to ask them where it's now and require them to send it to you again.

Is CH001670378 sent by China Post? I couldn't find any result for it in tracking system.

Thank you,
My daughter found the post office, although the address on the map she was given at another post office had an incorrect address. She did find the post office and collected the packages. Next time I will be sure the phone number is on the package.
Thank you again,
Beverly Enslow