How to print Chinese in bold with ADS service

I designed a xdp with Adobe LiveCycle Designer. It uses the font AdobeHeitiStd-Regular. But the Bold option is disabled for this font. When Chinese characters are printed, they don't seem to be bold enough although a little bolder than the font Adobe Song Std L.

Could anyone help how to print Chinese in bold?

Here is some background:

ME is an application installed on Netweaver Java. It utilizes NW ADS service to print documents in front end. ME uses an xdp file to determine the document format. The xdp file is designed by Adobe Lifecyle Designer. 

Methods I've tried:

Note 1968565 - IFbA: How to use a rasterized font on a ZPL output