On behalf of the local organizing committee, it is a great pleasure for me to wish you all welcome to the 11th triennial congress of the International Society of Theoretical Chemical Physics (ISTCP 2024), which will provide a unique opportunity to be updated on the latest scientific development and to develop new scientific ideas.

The program of the conference follows the successful recipe of earlier conferences, and will consist of plenary speakers and invited talks in a series of parallel sessions. In addition there will be poster presentations that are open to contributions from all participants. The venue, compact and situated in a central location, in combination with the invigorating sea breeze and the crisp Tsingtao beer on offer, should help create an atmosphere that stimulates the exchange of scientific ideas.

For many, the conference will be the first opportunity to visit Qingdao, and I encourage you use the opportunity to also explore North China either prior to or after conference. We will organize several tour options for the free afternoon of the conference, as well as the option to take a cable car (or hike) to the top of a Laoshan mountain overlooking the entire Qingdao city.

I look forward to welcoming you to the 11th congress of the ISTCP 2024.

Wenjian Liu (Chair)