Jim Cramer weighs in on Lyft's lock-up, Trump and China and his Real Money column.

President Donald Trump was tweeting about China over the weekend, saying that things were going well.

Lyft's lock-up period expires Monday. The company announced last week that it was ending its lock-up period early. "We and the underwriters may release certain stockholders from the market standoff agreements or lock-up agreements prior to the end of the lock-up period," the company stated in a regulatory filing dated Aug. 13.

Cramer wrote about retail in his Real Money column Monday morning:

"I have spent a lot of time talking about WATCH, although I still don't think people realize what's so important about it. WATCH, which represents Walmart, Amazon, Target, Costco and Home Depot, isn't just about the notion of convenience and value, online and offline."