The Left Angle Cross of Industry is named for Gate 30 and Gate 29. Human Design reads Gate 30, from Hexagram 30, The Clinging, sits in the Solar Plexus and is read as the longing and intensity of feeling that pulls a person into experience; and Gate 29, from Hexagram 29, The Abysmal, sits in the Sacral centre and is read as a sacral yes that, once given, perseveres to the end whatever the cost. It falls in the Left Angle family, which practitioners read as fated in flavour, serving something beyond the individual rather than a self chosen plan.
Its design half is Gate 34 and Gate 20, two of the four Integration gates that connect only to each other and to Gate 10 and Gate 57. Gate 34 sits in the Sacral centre and is read as pure power, most potent simply being itself. Gate 20 sits in the Throat and is read as awareness and expression that occur now rather than in reflection.
So a chart carrying this cross meets a pulling desire with a committed perseverance on its surface, while beneath it raw sacral power answers to an immediate, unreflective voice, both drawn from the closed structural group Ra Uru Hu called Integration. The numbers are inherited from the I Ching; reading them as one cross belongs to the modern reading, not the classical one.