Method for manufacturing integral shoe embryo

A method for manufacturing an integral shoe blank, comprising:

• an interlacing step:
• knitting an initial shoe edge by knitting at least two yarns in an interlaced manner;
• a shoe upper knitting step:
• forward knitting the at least two yarns connected to the initial shoe edge to be a first portion of a shoe upper, then backward knitting the at least two yarns to be a second portion of the shoe upper that faces the first portion of the shoe upper when a number of a plurality of shoe upper stitches is reached to a predetermined count, further forward knitting the at least two yarns according to the number of the plurality of shoe upper stitches again to be the first portion of the shoe upper, and hence cyclically performing the above process to form the first portion of the shoe upper and the second portion of the shoe upper as a tubular fabric;
• a reinforcement piece knitting step:
• continuing forward knitting at least one of the yarns to be a reinforcement piece when the number of a plurality of shoe upper stitches is reached to the predetermined count in the shoe upper knitting step, then backward knitting the at least one of the yarns when a number of a plurality of extension stitches is knitted to reach a predetermined count, further continuing forward and backward knitting the at least two yarns according to the number of the plurality of shoe upper stitches to be the first portion of the shoe upper and the second portion of the shoe upper when a number of a plurality of extension stitches is reached to the predetermined count again, and cyclically performing the above process to knit the reinforcement piece, the first portion of the shoe upper of the tubular fabric and the second portion of the shoe upper of the tubular fabric;
• a continual shoe upper knitting step:
• cyclically forward and backward knitting the at least two yarns to be the first portion of the shoe upper and the second portion of the shoe upper, and forming a shoe opening on one side of the tubular fabric;
• and
• a side overturning step:
• folding the first portion of the shoe upper and the second portion of the shoe upper from the shoe opening of the tubular fabric from inside out to locate the reinforcement piece in an in-shoe space of the tubular fabric defined by the overturned first portion of the shoe upper and second portion of the shoe upper to complete the shoe blank.