Something interesting to note! In both divinations, the Officer lines in the base hexagram are the same: Officer+Tiger+Hai Water in the Li Palace. We know that Officer gives a hint on the nature of illness. Li is Fire = blood, infection. White Tiger also pertains to injury or cut. Could it be that he had a serious wound that led to blood loss and infection? In ancient times, injuries like this could be detrimental to life because antibiotics were not well developed yet.
Do you have a source foe li being blood? I use the body part eyes for li.
