Siphon-jet flush water supply system for toilet stool

A flush toilet comprising:

• a toilet stool including a toilet bowl and a trap drainage passage connected to said toilet bowl, said toilet bowl having a water jet hole defined in a bottom region thereof and opening toward said trap drainage passage;
• pressurizing means adjacent said toilet stool and coupled to said water jet hole for drawing water under a first pressure and expelling the water under a second pressure higher than said first pressure through said water jet hole toward said trap drainage passage to develop a siphon flow in said trap drainage passage to discharge sewage from said toilet bowl through said trap drainage passage;
• and
• said pressurizing means expels the water under said second, higher pressure upwardly through said water jet hole.