For those just starting out on their Erhu, this is quite a useful thing for you:
Its an adhesive transparent strip with markings to show where you place your left hand fingers for different notes. The fingerings are in the key of G.
You have to move your qianjing up first before sticking the strip on the neck of your Erhu. Afterwhich, you move the qianjing down to the position just above the 5/2 markings.
You should remove it(or avoid looking at it) once you get the feel of the finger positions so that you do not become too dependent on the markings.
It'll be dreadful if you perform a whole song with your eyes glued to neck of the Erhu.
I'm giving them away free. Just pay for the postage and handling fees (~ US$2 ). Interested parties please email me at tansungwah@eason.com.sg with the subject title "Erhu finger labels". If you're in Singapore, just drop by our shop and pick it up.