This logo is made of three inter-connected open rings. The inner ring represents the PRD region and its original context. The middle ring represents the Greater PRD region. The outer ring represents the PPRD region and an even broader sense. The design that each ring is larger than the inner one holds up the prospect of prosperous development and continuous expansion of the PRD economy. The ring that opens represents the open-minded multi-regional cooperation. The inter-linking of the rings signifies the diversity and integration of this PPRD regional cooperation. The free-flowing rings give a sense of dynaminism and create a strong visual impact. This is to signify the boundless vitality of this economic cooperation. To build on this design concept, different colors are used: green stands for life, blue is hope, yellow loftiness.