This public art installation project extends the lines of “ running & cursive ,where “Promise Under the Rainbow” is to be installed on the south east of this parking lot in the Haowangjiao location. The work crosses over two areas to form a conversation between 2 positions. In order to blend into the overall smooth lines and belt-shaped hard body design of the Calligraphy Greenway,the arc lines of this work form a pausing stop and intersection as well as a resting space,thereby offering people a landmark for meeting up with family and friends other than the parking lot and the service center. The cloud-like seats on the areas provide functions for people to think, imagine, and rest.“ Promise Under the Rainbow” applies rainbow-like Galvanization steel spray-painted colors,symbolizing the mood of hope and jubilance. We hope to construct a rainbow-like public art amongst the combination of the vast green lands of the Citizens Square with the jubilant recreational venue for the citizens,so as to correspond to the idealism and magnificence of the urban life. When the night falls, digital controlled lights and colorful variations will introduce attractive night lightings,and further connect with the landscape characteristics of the stores in the neighborhood.