From 01eb6cc23a773a5a859223197195fb54b380a937 Mon Sep 17 00:00:00 2001
From: c9s <yoan@maicoin.com>
Date: Fri, 19 Mar 2021 11:02:35 +0800
Subject: [PATCH] readme: add one more description

---
 README.md | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/README.md b/README.md
index d4ff85962..b05e491f1 100644
--- a/README.md
+++ b/README.md
@@ -169,6 +169,8 @@ SLACK_TOKEN=xxoox
 
 ### Synchronizing Trading Data
 
+By default, BBGO does not sync your trading data from the exchange sessions, so it's hard to calculate your profit and loss correctly.
+
 By synchronizing trades and orders to the local database, you can earn some benefits like PnL calculations, backtesting
 and asset calculation.