A formidable Chinese warrior empress from a fictional Tang dynasty stands on a dramatic palace balcony during a violent thunderstorm, wearing layered silk robes in imperial crimson and gold with intricate phoenix embroidery and a towering golden guan crown with dangling jade beads, her long jet-black hair adorned with pearl pins and crimson silk ribbons, gripping a legendary jian straight sword, fierce royal expression, dramatic electric blue lightning illumination contrasting warm amber lantern glow from palace corridors, rich details of swirling rain and ancient pine trees, oil painting texture with digital precision, powerful dignified three-quarter composition against epic stormy sky with crackling lightning, 4k hyperdetailed digital art