My name is Wang Kun. Ever since middle school, my sister Wang Wei and I have     1     about taking a great bike trip. Two years ago she bought     2     expensive mountain bike and then she     3    me to buy one. Last year, she visited our     4    , Dao Wei and Yu Hang at their college in Kunming. They are Dai and     5    up in western Yunnan Province near the Lancang River, the Chinese part of the river     6     is called the Mekong River in other countries. Wang Wei soon got them     7    in cycling too. After graduating from college, we     8     got the chance to take a bike trip. I asked my sister, "Where are we going?"     9     was my sister who first had the idea to cycle     10     the entire Mekong River from where it begins to where it ends. Now she is planning our schedule for the trip.