Abel, a skilled builder, had contracted to construct a bungalow for Cain, a wealthy religious leader and adviser. It was agreed that the project would complete on $1$ July $2024.$ The agreed construction price was HK$$3$ million, to be paid in two instalments. The first instalment, totaling HK$$1$ million, was paid when the contract was signed. The second instalment was payable upon completion.Six months into the project, Abel told Cain that he had underestimated the construction cost and had difficulty in finishing the project on time. Since Cain had already scheduled to host a religious conference in the bungalow after the agreed completion date, Cain promised to giveAbel an extra HK$$500,000$ if Abel could complete the project on time. Abel agreed. Abelmanaged to finish the bungalow on time but the flooring, in Cains opinion, was not up to the required standard. As a result, Cain refused to settle the outstanding amount. Eventually, Cain spent an extra HK$$100,000$ in repairing the flooring before the bungalow could be used. what is Legal Issues