Land officers and contract workers failed to remove more illegal structures from a rural leader's park and zoo in Yuen Long, as dozens of villagers guarded the entrance.
The villagers oppose the Lands Department's move to deal with unlawful structures in the Tai Tong Lychee Valley.
'You give them an inch and they want a foot. They're a bully,' said Leung Fuk-yuen, one of two park owners and chairman of the Shap Pat Heung Rural Committee.
Leung's 12,000-square-metre park, which goes into Tai Lam Country Park, has occupied 5,000 square metres of government land illegally for 18 years.
Secretary for Development Carrie Lam Cheng Yuet-ngor said police would be involved if staff or contractors were threatened.
Leung, a key Heung Yee Kuk member and a Yuen Long district councillor, has repeatedly applied for short-term tenancy on government land. But each application has been rejected because the Agriculture, Fisheries and Conservation Department objected, said the Lands Department, which is seeking legal advice on prosecution.
The Yuen Long District Council passed a motion last week urging the government to process the applications and stop enforcement actions in the meantime.