Hastings District councillor Kevin Watkins said it has been remarkably successful.
"It has helped us to understand each other and, particularly for our business people, enabled an understanding of China's culture that has enabled them to spread their trading wings over much broader areas of China," he said.
Watkins added that the relationship has also raised awareness of Hastings in Guilin.
"As Chinese visitors to our shores have become more independent travellers, it has certainly increased the number of tourists getting off the well-worn Auckland-Rotorua-Queenstown track to come and visit our beautiful part of New Zealand," he said.
Functions on Hastings will host a free four-day exhibition showcasing information on the sister city journey and demonstrations of Guilin and wider Chinese culture, and there will be a free live event in the Hawke's Bay Opera House on the Friday night of that week.
The Lighting of the Osmanthus Gardens celebrates the relationship every year.
"It is always incredibly popular and this year we have additional space and lanterns ready, to help us celebrate what is a very special occasion," Watkins said.
More details about the events will come out in the next few weeks.