To open a shop is easy, to keep it open is an art

Similar sayings:

When a large vessel has opened a way it is easy for a small one to follow When a large vessel has opened a way it is easy for a small one to follow
Priests return to the temple, merchants to the shop Priests return to the temple, merchants to the shop
Teachers open the door You enter by yourself Teachers open the door You enter by yourself
Where a chest lieth open, a righteous man may sin Where a chest lieth open, a righteous man may sin
A vacant mind is open to all suggestions, as a hollow mountain returns all sounds A vacant mind is open to all suggestions, as a hollow mountain returns all sounds

Chinese sayings and proverbs