Roman shade window curtain having rolling spool for multi-step retracting/unfolding control

A Roman curtain comprising a Roman shade and a rolling spool curtain providing multi-step engagement between the Roman shade and the rolling spool curtain, the Roman curtain further comprising:

• the Roman shade having the rolling spool curtain serving as the retracting and expanding control at the back side thereof, where fold lines on the Roman shade are formed by a delineating rod horizontally clipping a horizontal strip of fabric of the Roman shade to a double-pronged hook, which connects to an auxiliary rod that extends from either side of the Roman curtain and does not go the full horizontal width of the Roman curtain;
• and,
• a slidable locking mechanism at a bottom end of said rolling spool curtain wherein a round tube is wrapped around a horizontal rigid piece that forms a bottom beam of said rolling spool curtain, and two sliding tubes are placed outside a surface of said round tube, providing changeable engaging positions for the bottom beam of the rolling spool curtain to the fold lines of the Roman shade fabric, such that when the two sliding tubes are moved towards the center of the round tube, the bottom beam is allowed to be positioned to a desired pair of the auxiliary rods and then the sliding tubes may be moved towards two respective sides of said Roman curtain such that the sliding tubes engage respective ones of the pair of the auxiliary rods, for the purpose of adjusting how much of the Roman shade will be retracted up.