Indonesia's new capital continues to attract the attention of investors from various countries, including China. The Metropolitan Administration issued a work permit to PT China Harbour Indonesia to participate in the construction of a road and multi-purpose tunnel project worth 70 trillion rupiah.The infrastructure includes a 138.6-kilometer-long smart tunnel that will serve as the backbone of Xindu's utility network. The project also involves other companies, including state-owned enterprises such as PT Brantas Abipraya and PT Hutama Karya, demonstrating the government's commitment to multi-party cooperation to create a smart and sustainable city. The multi-purpose tunnels will be important infrastructure that, when completed, will allow for the installation and maintenance of utility networks without disturbing the road surface, reducing environmental impacts and minimizing traffic disruption. The government hopes that the involvement of Chinese companies will accelerate the transfer of technology and expertise. As of February 2025, 584 trillion dong have been invested, and an additional 1.25 trillion dong have been invested from five domestic firms, which will be used to build mixed-use projects including hotels, offices and universities to accelerate the realization of the urban ecosystem of Xindu.