Bullet trains are a great alternative to flying in China and offer reasonable prices. Hangzhou to Shanghai is 56RMB, Shanghai to Suzhou is 40RMB, Shenzhen to Xiamen is 180RMB and Shanghai to Beijing is 555RMB. Bullet trains not only travel 300km/hr, but are very clean, offer free hot water, operate toilets throughout, and are timely. Be sure to book trains one month in advance for national holidays and leave with plenty of time to spare, as train stations are very big.