yuán / dīng / xiān / xuǎn / hǎo / zhēn / mù / zài / bǎ / yōu / liáng / zhī / tiáo / jiē / shàng / qù

园丁先选好砧木，再把优良枝条接上去。

The gardener first selects the rootstock and then grafts a good branch onto it.