dì dào
地道药材。
dì dào yào cái
Authentic medicinal materials.
她的普通话说得真地道。
Tā de pǔtōnghuà shuō de zhēn dìdao.
She speaks Mandarin really authentically.
他干的活儿真地道。
Tā gàn de huór zhēn dìdao.
The work he does is really solid/genuine.