ANSWER ...例一:用神無根
example : Yongshen not having a root basis自占病,世爻亥水為用神,被未土忌神動而剋水,
Someone divine for his own illness,the Useful God [Yongshen ] is on Shi self Hai water line, by the Jealous God [Jishen ] Wei earth moving and subdue [ke ] water.
幸得元神酉金亦動,忌神未土反生元神之酉金,金生亥水,接續相生,化凶而為吉矣。
It is lucky that there is a You metal Primordial God [Yuanshen ] moving line, Jealous God [Jishen ] Wei earth [5th line ] return to give strength to You metal Primordial God [Yuanshen ], this metal can produce Hai water, by continuously engendering, even taken [help ] from vicious [ Jealous God [Jishen ] Wei earth 5th changed line] this is lucky.
豈知亥水,月沖日剋,值月破而被剋,如樹無根,雖有生扶,奈生之不起何,果卒於卯日。
But is Hai water, with the month EB Clash - Break [Chong - Po ] and day subduing [Ke ], as a tree not having a root basis, although there is producing support, this produce cannot help to raise up, and indeed died on a Mao wood Day.
應卯日者,沖去元神之日也。此謂之「用神無根,元神有力亦難生」。
When Mao wood day comes, You metal Primordial God [Yuanshen ] is clashed [ chong ] with the Day [EB Mao ], this is called as 「Yongshen not have a root basis, even if a powerful Primordial God [Yuanshen ] producing [sheng ] it there is Disaster (difficulty)」
Tientai ...