Split ac water dripping and drainage pipe isn't clearing due to something solid inside it

[xjadeaurealis]

The split ac in my bedroom is currently gushing out water from the drainage pipe. I've tried to clear the pipe using metal strip, cable with hook, rod, flushing out water using water hose and vacuuming, but none of these works out.

I've tried to use a narrow PVC pipe and sharpened the end to see if it can pierce the clog but the sharpened pipe ended up blunt as hell. It looks like there's something solid blocked the entire pipe. Does anyone have idea how to remove the clog?

What makes it worse, I couldn't find any pipe for the drainage outlet. Outside bedroom, on the roof above bedroom, any other place near the bedroom but couldn't locate it. Any idea?