school / sect / purpose / model / ancestor / clan / to take as one's model (in academic or artistic work) / classifier for batches, items, cases (medical or legal), reservoirs
"Duke Li of Wei Answering Emperor Taizong of Tang", military treatise attributed to Li Jing 李靖[Li3 Jing4] and one of the Seven Military Classics of ancient China 武經七書|武经七书[Wu3 jing1 Qi1 shu1]