Du, a citizen of China, joined the Manila-based ADB in early 1994.

She was initially assigned as deputy country director in the Resident Mission in Bangladesh since September 5, 2002.

According to a news release, since joining the ADB, Du worked in the fields of country strategy and program formulation, project processing, project post-evaluation and quality review.

Much of her service at the ADB was spent on country programming and project processing in the ADB's South Asian developing member countries, including Bangladesh, Bhutan, India, the Maldives, Nepal, Pakistan and Sri Lanka.