Peter made an offer to sell a unique Ming Dynasty Vase to Eliza at HK$1 million.

Eliza said she would like to buy it if the price is HK$0.8 million.

After some negotiation, Peter was willing to sell it for HK$0.9 million.

Eliza said that she needed three days to think about it. 51

Two days later, Anthony, friend of Eliza doing similar trading business, told Eliza that he had just bought the Ming Dynasty Vase from Peter at HK$0.95 million.

Eliza immediately approached Peter and said that she has accepted Peter's offer and wanted to buy the vase at HK$0.9 million . Peter refused to sell it and said the vase had been sold.

Advise whether there is a binding contract in which Eliza can sue Peter?