同宗同源

to share the same origins; to have common roots

like / same / similar / together / alike / with

see 衚衕|胡同[hu2 tong4]

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

homology (biology) / a common origin

root / source / origin