Just started erhu (dont worry, my bow got all the rosin)

[hishuisaki]

I just recently got an erhu, and playing the violin beforehand did help me a bit but there is one thing im wondering about: 

I can't really seem to create this "crying" sound the erhu makes, it sounds more like a fiddle/violin to me. Is there a certain technique? Im also very aware that it might be my freshness when it comes to erhu, i just thought 
the "crying" sound is natural to the erhu. (Im not speaking about the rolling vibrato, i mean the kind of scratchiness. Mine sounds very clean)

[sanmenxia]

A different bridge might have a scratchier sound.