The passive strategy for buildings in summer hot and winter cold zone are complicated, requiring a combination for various passive techniques. Previous studies on the passive strategies usually stray into the trade-off between single passive technique and energy saving. This work focuses on the completely passive cooling and heating, by using a River-Air Source Heat Pump (RASHP) and Greenhouse (GH) system, for the courtyard buildings located in Jiangnan region of China. The proposed heating and cooling systems can be run, using the solar energy purely. Due to the Jiangnan region with a high density of water network, the cooling space system can be achieved by using the evaporative cooling effect of water. In winter, the airflow circulation and space heating are achieved in the target rooms, whose construction is similar to that of Trombe wall. The proposed systems are also beneficial to maximize daylighting and energy saving of artificial lighting in the building interiors, via replacing the eaves of roofs over patio by a glazed device. Furthermore, the proposed systems can be easily created in the courtyard buildings, without complicated construction and special devices. The total annual energy consumption in the novel-designed scenario integrated with the proposed systems is 19528.88 kW·h, 5839.57 kW·h lower than the conventional one, with energy saving of 23%. The completely passive heating and cooling systems with daylighting function can provide a new body of building energy saving to fill the knowledge gap in this field.