China DOS Union

When I play Xia Ke Ying Xiong Zhuan III, it exits as soon as it runs.
I tried several boot methods on the boot disk, but none worked.
Later I used a normal Win98 boot disk and it worked.

Please be clearer when you post, for example, which DOS 7.1 boot disk you mean (there are many kinds of DOS, so please make it clear). Is it an MS-DOS 7.1 boot disk, a PC-DOS 7.1 boot disk, or a ROM-DOS 7.1 boot disk? Then who made this DOS 7.1 boot disk, and what exactly is it called (there are many different DOS 7.1 boot disks made by different authors here, so this should be stated clearly)? Also, which version of this boot disk is it? After booting, what exactly happens when you run that game? And so on... And next time when you post, please be sure to pay attention to this point.

It's the DOS 7.1 installed from that CD installation edition of DOS 7.1.

Geez, this is getting more and more confusing. Are you talking about a DOS boot disk or DOS after installation? And which DOS 7.1 is it, MS-DOS 7.1, ROM-DOS 7.1, or PC-DOS 7.1?