This is the pre-eminent reference work on contract. An essential book for anyone working on contracts, either for drafting or dealing with points of dispute. It is an extremely well-respected title, for which most authors want to write for because of the prestige associated with it. Of particular note, the sixth edition contains the addition of a new section on AI, an expansion of the blockchain section to reflect recent developments in this field, and further detail on data protection (in light of the entry into force of GDPR in the EU in May 2018). In addition, there is a new chapter on cyber law covering data protection, cloud computing, cybersecurity, blockchain technology, smart contracts, artificial intelligence and related subjects. The sixth edition welcomes a number of new authors who in updating chapters, have significantly refreshed key content areas. With these updates, Chitty on Contracts, Hong Kong Specific Contracts is a key title to have as a reference tool.