If the winning rates for the Chengyu Expressway subscription are taken as 0.11%, 0.14%, and 0.17% respectively, then the annualized returns on new stock subscriptions would be 1.62%, 2.34%, respectively. The issue price of Sichuan Chengyu has been determined to be 3.6 yuan with a winning rate of 0.2586%.
Chengyu Expressway lottery registration post (incidentally asking about the results of the subscription...).