Correct

倘使

/ cháng shǐ / 
Strokes

Example

As a Conjunction

if; supposing; in case

1
Chángshǐ
倘使
shībài
失败
  
,
yě
也
bùyào
不要
huīxīn
灰心
  
。

Don't be dejected in case you fail.