(Bloomberg) — Hongkong Land Holdings Ltd., the biggest landlord in the heart of the Asian financial hub, signed a lease with a crypto asset firm for the first time as the century-old company moves to embrace the emerging sector. Hong Kong-based HashKey Group will take up a floor in Three Exchange Square owned by Hongkong Land, the real estate firm said in a statement Wednesday. The lease represents an evolution of the company’s portfolio in the Central district that brings together traditional financial institutions with blockchain and virtual asset firms as demand for space from foreign banks declines amid the…