Eddy has lost his bird. He loved his bird so much, so he posted an advertisement on a local daily newspaper on 6 June 2021. The advertisement reads like this: \"LOST BIRD, block, 3-,ta'car old. photo attached. with a name tag which reacts 'Li'fy '. HK$30. 000 rcwardfor safe return. Money deposited with HSBC ah-eodyfor the reward Alice read the advertisement on 6 June 2021 and found the lost bird named Lily. She returned the bird to Eddy on 15 June 2021. However, when Eddy saw the 1051 bird. he refused to pay the reward to Alice. This is because the bird was given by his girlfriend as a gift. and on 10 June 2021, Eddy subsequently broke up with his girlfriend. He did not want the lost bird any more so he placed another advertisement on the same newspaper on 11 June 2021. Unfortunately, Alice did not read the second advertisement on 1 1 June 202]. (a) If Alice appointed you as her legal consultant, please advise Alice the legal rights for claiming the llK$30,000 reward from Eddy by applying the contract law rules you learned. (20 marks) (b) Alter this case, Alice has noticed the importance of HK law. She attended a conference on HK legal system, Basic law and Contract. She has some questions on the following issues and wants to seek your advice on the following matters: i) What are the differences between law and ethics? (10 marks) ii) The speakers at the conference talked about one of the basic rules of Contract named \"postal rule\". Alice did not understand the concept. What is Postal Rule? Can you explain the exceptions of Postal Rule to her? (5 marks) iii) According to Basic law, what are the sources of Hong Kong law