豚蹄穰田
tún​tí​ráng​tián

to expect a big return from a small investment

豚蹄穰田 tún​tí​ráng​tián
to expect a big return from a small investment
To desire a huge harvest or profit from a very small offering; based on an anecdote from the "Records of the Grand Historian" about a man offering a single pig's trotter while praying for a bountiful crop.